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LTC lecture room occupancy

You can check the timetables of auditorium availability here:

Naglis 305 auditorium          LTC 306 auditorium          Naglis 604 auditorium

If you want to reserve these classrooms for your classes, meetings or other activities, you can do so by registering in the VU timetable system with your VU Information System login details. After registering, click on "Add a reservation" in the window that opens and fill in the form provided. Bookings must be approved by the person responsible for the timetable before they can take effect, so don't be surprised if they don't appear in the calendar immediately after creation.

In case of any uncertainty, lack of access to VU IS or to create a recurring reservation, please contact the Centre Administrator, indicating the auditorium you wish to reserve, the purpose of the reservation, the date (period from-to-date, if it is a recurring reservation), the time (from-to-date), and your contact details.

 

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GMC I k.(neurobiofizikai) 1pogr

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     FSF I k (Gamtamokslinis ugd.) 1gr.    MF I k. (optomet.) 2gr., 1 pogr.   MF I k. (optomet.) 2gr., 2 pogr.      GMC I k.(neurobiofizikai) 2pogr.
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CHGF I k. (BOCH - 1) 2 gr. 1 pgr.

  

 

 		         CHGF Ik (CHEM1) 1gr.  
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14 GMC I k. (molek. biologija)  1 gr.     CHGF I k. (CHEM) 2gr. / (NMCh)     MF I k. (slauga)      1 gr.
 		      MF I k. (optomet.)   2 gr., 2 pgr.  
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2 pogr

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16   GMC I k. (molek. biologija)  2 gr.   MF I k. (optomet.)    1 gr., 2 pogr.   . ...............

CHGF I k. (BOCH - 1) 1 gr.2 pgr.

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18       MF I k. (slauga)       3 gr.

MF I k. (slauga) 6 gr.

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The first years after independence were difficult: budget funding was cut sharply, the number of staff was almost halved, and there was no scope for additional project funding. However, after surviving the first few difficult years, new perspectives opened up. Cooperation agreements were signed with European and US research centres, and the Department's research projects were supported by the State Science and Studies Fund.

Among the first orders from foreign organisations in independent Lithuania we can mention: a stable picosecond glass laser for Aalborg University; an optical parametric amplifier for a femtosecond titanium sapphire laser for the European Laboratory for Nonlinear Spectroscopy (LENS) in Florence; second- and third-order correlators and autocorrelators for the Universities of Pavia and Lund, and for the Institute of Quantum Optics in Garching; large-aperture second- and third-harmonic generators for high-power femtosecond lasers at Lund University; research for the Boeing Company on the generation of high-power laser radiation in the visible domain for the evaluation of atmospheric distortions.

The Department's experience in laser and non-linear optics design was used in 1994 to found the first laser company to spin off from the Department, MGF Light Conversion. Its first products were optical parametric light amplifiers for femtosecond and picosecond TOPAS lasers and stable picosecond Twinkle glass lasers. In 20 years, the company has become one of the largest Lithuanian companies producing world-renowned products. These include the TOPAS, of which more than 1000 units are installed in many universities, research institutions and companies around the world, and the PHAROS femtosecond ytterbium laser, which serves both science and industry. Altechna UAB, the second laser company established in 1996, which spun off from the Department, is growing rapidly. It is involved in the development and production of laser components, special lasers, laser electronics and laser micromachining systems.

In 1999-2003, a unique coherent spectrophotometer was developed at the Laser Research Centre of Vilnius University within the framework of the NATO Science for Peace project "Laser spectrometer for testing of crystals and optical component coatings in a wide spectral and angular range", which enables ISO-compliant measurements of reflectance and transmittance, scattering and absorption losses, as well as the threshold of the laser-induced optical damage in a broad spectral region. The project directors were Prof. V. Sirutkaitis (VU) and Dr. R. Eckardt (Cleveland Crystals Inc.). The NATO grant for the project was EUR 888 thousand. The grant for the project was 888 LTL and was mainly used for the purchase of equipment. An additional contribution of 100 thousand EUR was received from the Lithuanian Science Council. A subsidy of 100 LTL was also provided. This project was an important criterion for the selection of the VU LTC on the list of science centres to be renovated under the joint project "Renovation of Science Centres 2001-2003" of the Ministry of National Defence (MoND) and the Ministry of Education and Science (MoES). Within the framework of this project, the VU LTC received a total of EUR 4.1 million. LTL LTC. The LTL LTC was granted a total amount of EUR 3.7 million. For 7.7 million LTL, new equipment was purchased, including the first femtosecond titanium sapphire laser in Lithuania, and for 0.4 million LTL, the LTL LTL LTC was equipped with the first titanium sapphire laser in Lithuania. The laboratory premises were renovated for the first time. This support allowed for a major renovation of the LTC's scientific equipment and, to some extent, the laboratory infrastructure. The LTC equipment purchased with the funds was made available free of charge to the staff of other Lithuanian research institutions in accordance with the approved open access principles. This has helped the department's researchers to participate in European research programmes.

In 2001, the VU LTC gained the right to provide international access when the CEBIOLA project ("Cell Biology and Lasers: Towards New Technologies"; project budget - EUR 631 000), developed together with the VU Department of Biochemistry and Biophysics, was awarded the status of an Exclusive Research Centre in the EU competition. At the time, it was the only Exceptional Science Centre in Lithuania among 34 others in EU candidate countries.

The reconstruction and renovation of the VU LTC building benefited from funds allocated by the MoES and MoD in 2000-2002, as well as from EU Structural Funds in 2005-2008. The support provided by the MoES and the MoES under the programme "Renovation of Scientific Centres" helped the LTC to become an associate member of the international EU network of laser centres LASERNET and, since 2004, a full member of the integrated European laboratory LASERLAB-EUROPE. Within the framework of the LASERLAB-EUROPE projects (currently LASERLAB-EUROPE III project), 82 EU researchers from Ireland, Austria, the Czech Republic, Estonia, France, Germany, Greece, Italy, Spain, the Netherlands, the United Kingdom, and the United Kingdom visited the VU LTC in the period 2004-2014 to carry out 39 international projects, and to use the equipment of the VU LTC, which was rented out for ~ €1.3 million, for 480 days. LTL.

Opening of the newly renovated Laser Research Centre in 2002.From the left: the Vice-Rector of the VU Prof. J.V. J. Vaitkus, Minister of National Defence L. Linkevičius, Prime Minister A. Brazauskas, Prof. A.P. Piskarskas and KEK Affairs Manager L. Mikalauskienė

International access was also carried out between 2005 and 2008 under the EU Marie Curie sub-programme project ATLAS (38 months, 6 international projects, 6 PhD students or young foreign researchers). Another major international project, STELLA (2006-2009), was carried out under the Marie Curie Chairs sub-programme of the EU's 6th Framework Programme (FP6). Its aim was to create a European reference training centre where young researchers could acquire and share the most up-to-date and relevant knowledge on laser physics and non-linear optics. The project has successfully hosted 3 annual month-long summer schools on laser experiments for Lithuanian and international Masters and PhD students, where leading Lithuanian and international experts in laser physics have shared their experience. The STELLA project expanded the scientific activities and international cooperation of Vilnius University laser specialists. During the project, a science popularisation exhibition was organised, revealing to the general public the deep links between science and art.

In 2004-2008, four FP6 projects and five High Technology Support Programme (HTSP) projects were carried out by the Vilnius University LTC. In 2007-2008, the VU LTC was involved as coordinator or partner in seven new ATPP projects. Thus, new EU and NATO funded projects are continuously being won, cooperation with Lithuanian laser industry is expanding, the number of PhD students in the Department is increasing and the number of publications is growing.

Normal 0 false false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 EU Structural Funds have helped to upgrade the infrastructure and equipment of teaching and research laboratories, modernise the Master's and PhD programmes.

Normal 0 false false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 With the constantly rapidly growing needs of science and technology in laser research, the Government of the Republic of Lithuania decided to establish a modern complex "Naglis" in the "Sunrise Valley", which will be used for the development of new promising scientific fields, the development of laser technologies and the international access to both scientific and business organisations. The complex was built with funding from the EU Structural Funds' Growth Action Programme measure "Strengthening the General Infrastructure for Science and Studies" (VP2-1.1-ŠMM-04-V). The project has significantly strengthened Lithuania's position in EU research infrastructure networks and international R&D programmes (Laserlab-Europe and ELI - "Extreme Light Infrastructure"). The aim of these programmes is to create a scientific complex providing European and global scientists and industry with access to unique high-power laser radiation equipment, as well as a variety of secondary sources, for innovative research in high-field physics and cosmology.

The Naglis Open Access Complex is built on top of the ~730 m2 VU LTC superstructure. It houses four scientific laboratories (for parametric phenomena, high-intensity optics, laser nanophotonics and metrology experiments), which were designed from the outset with the need to maintain a constant temperature and cleanliness in mind. This is accompanied by workstations for the centre's staff, visiting researchers and students, as well as a spacious chemical preparation room. The complex will include basic and applied research, student training, and allow Lithuanian companies to test advanced laser technologies for their product development. The new laboratories of the Naglis complex are planned to develop the following scientific areas:

  • Parametric phenomena, X-ray generation and attosecond physics. The laboratory has developed and deployed a multilevel parametric amplification system for the generation of terawatt-peak power pulses with a duration of less than 10 femtoseconds; a diagnostic complex for the study of non-linear phenomena and materials in the ultraviolet and X-ray spectral domains.
  • Generation of terahertz radiation in gases. A high-power femtosecond Ti:sapphire laser system will be used to generate terahertz (and optical) band sources for nonlinear optics in gases with high damage thresholds.
  • Laser nanophotonics. High power and broadly tunable laser sources will also be used for the rapid formation of derivatives requiring nanometre resolution. Such formations would have applications in micro-optics, micro-mechanics, photonics and biomedicine.
  • Damage and absorption studies of optical elements. This will be carried out with high-energy laser sources tunable over a wide spectral range. Higher power radiation will allow the use of standard scattering and radiation recording techniques to identify optical damage and to perform such studies under vacuum conditions.

KEK darbuotojai

Department professors, staff, PhD students and students in front of the new Naglis Complex building in May 2014.

VU KEK and LTC staff members publish numerous scientific papers in prestigious international scientific publications, give presentations at international conferences, actively participate in international projects, and continuously expand their research areas. This confirms the scientific excellence and competence of VU KEK and LTC in the field of laser physics and laser technologies. In addition to the long-established Lithuanian laser companies Šviesos Konversijos and Altechnos, VU KEK and LTC staff and graduates have created Lidaris UAB in 2012 and Femtika UAB in 2013. Since 2013, VU KEK and LTC have been operating open access centres providing access to their equipment, which are used by the aforementioned and other Lithuanian companies. Graduates of the Department are successfully working in the world's most renowned research centres (Europe, USA, Japan), and the KEK and LRC staff are laureates of four Lithuanian Science Prizes and one Progress Prize. The Department balances basic and applied research and experimental development. At the same time, it hosts studies and trains highly qualified laser technology specialists.

During the 40 years of the Department's work, 457 graduates have graduated (242 graduates before 1995, 214 Masters graduates between 1996 and 2014), 67 doctoral and 7 habilitated doctoral theses have been defended, and 4 habilitation procedures have been conducted.

Thus, the VU Department of Quantum Electronics, the Laser Research Centre and the Naglis Open Access Complex:

  • is the largest and strongest scientific unit in Lithuania, where research on laser physics, non-linear optical phenomena, laser spectroscopy, laser applications and laser technology development is carried out;
  • the only one in Lithuania that trains Masters in laser physics and laser technology;
  • the only one in Lithuania to provide international access to foreign research groups since 2001, allowing them to use the unique laser systems available.

The science of quantum electronics dates back to 1954, when the first microwave quantum oscillator, the maser, was developed. However, the development of the science was given a much greater impetus by the development of the optical quantum oscillator, the laser, in 1960. Interest in lasers and non-linear optics as promising new fields of science began at Vilnius University immediately after the development of the laser. The beginning of the history of laser physics was in 1962, when the then head of the Department of Radiophysics, Prof. P. Brazdžiūnas, sent three students - A.P. Piskarskas, E. Maldutis and I. Gulbinaite to continue their studies at Moscow Lomonosov University, which they successfully completed in 1965. Stabinis and K. Burneika. The promise of quantum electronics began to emerge during their studies in Moscow, when the Nobel Prize was awarded in 1964 to N.G. Basov, A.M. Prokhorov and Ch.H. Townes for their achievements in laser physics. The first two worked at the Moscow physics institutes and worked closely with Moscow University, so that the level of quantum electronics studies there was very high. Physicists from all over the world, mainly Americans, French and Germans, used to visit. After graduation, all the students who were sent to study there entered the postgraduate course at Moscow University, defended their dissertations and returned to Vilnius University to continue their research work (except for I. Gulbinaitė, who entered the postgraduate course at MVU two years later, and then went to the USA).

Nobelio premijos laureato

Nobel laureate (1964) Ch. Townes visits Moscow's Lomonosov University (1965). Seated from right to left: Professors S. Akhmanov, Ch. Ch. Achmanov, Ch. Townes, R. Khokhlov, S. Korniyenko. Standing in the first row from right to left: postgraduates A. Piskarskas, M. Dzhizhiev, B. Akanaev, V. Fadeev

The contacts with foreign researchers made during his postgraduate studies were of great help to scientists later on, especially to the future head of the Department of Quantum Electronics, academician Professor A.P. Piskarskas, in establishing contacts with the world's strongest laser physics centres, in organising the Vilnius International Laser Physics Conferences, and in publicising the achievements of Lithuanian laser researchers to the world. Interestingly, in 1964-1965, while still a student, A.P. Piskarskas and his co-authors published the results of their first research in a prestigious scientific journal. This was the first article by a Lithuanian physicist on the interaction between laser radiation and matter. A.P. Piskarskas then studied the wavelength changes of laser radiation as it propagates through crystals and observed for the first time the phenomena of parametric amplification and generation of light. Similar phenomena were also described by physicists in the USA at the time, and A.P. Piskarskas' work is often cited alongside that of overseas colleagues.

A P Piskarskas su Kplosovu

A. P. Piskarskas, a postgraduate student at Moscow Lomonosov University, experiments in a laser laboratory with graduate student V. Kolosov (1967)

When they returned to work at Vilnius University, a group of like-minded people began to form, united by a common interest in quantum electronics. They were joined by R. Rakauskas, a senior lecturer at the Department of Radiophysics. Thus, in 1969-1970, a strong group of theoreticians and experimentalists was formed, determined to work in the new field of physical science. Under the leadership of senior lecturer R. Rakauskas. A.P. Piskarskas, the development and research of continuously tunable frequency lasers was carried out. Senior Lecturer A. Piskarsky and Prof. A. Piskarsky have been working on a series of research projects. R. Rakauskas studied energy migration processes in rare earth mantles. Senior Lecturer. E. Maldutis investigated the mechanisms of disruption of non-linear crystals by strong laser radiation.

In 1970, the Department of Electronics was established and quantum electronics specialists were transferred from the Department of Radiophysics. The Department of Electronics trained physicists specialising in electronics, and quantum electronics became the Department's main scientific focus. It was devoted to parametric light generation in non-linear crystals by changing the conditions of amplification and modulation, to the first study of simultaneous phase and group synchronism, to increasing the efficiency of parametric wave interaction, and to the study of non-linear wave interaction in crystals under the influence of high-intensity picosecond pulses of laser radiation (A.P. Piskarskas, A.P. Stabinis and K. Burneika).

P Brazdziunas

The patriarch of Lithuanian experimental physics, academician P. Brazdžiūnas (middle), the pioneer of laser physics and non-linear optics research at Vilnius University, the head of the Department of Astronomy and Quantum Electronics, doc. A.P. Piskarskas and Dr. R. Danielius (1982)

1971 Senior Lecturer. Maldutis moved to the Institute of Semiconductor Physics, where he founded the Laboratory of Laser Radiation and Material Interaction. In 1972, quantum radiophysics was included in the plans for the Molecular Acoustics Problem Laboratory. New research topics were formulated, three of which were in the field of quantum electronics: the development of continuously tunable parametric ultrashort pulse generators in the 0,78¸1,65 mm range; the design and study of stable phototropic films for controlling ultrashort pulses in solid-state lasers; and the development and fabrication of an automated device for the measurement of ultra-small variations in the refractive index of nonlinear crystals (5-10-3).

In 1974, the Department of Astronomy and Plasma Physics was reorganised into the Department of Astronomy and Quantum Electronics as part of a further reorganisation of the departments in the Faculty of Physics. It remained under this name for 14 years, until 1988, when it was renamed the Department of Quantum Electronics. In 1972, Assoc. A. Misiūnas, who continued to head the Department after the name change. At the end of his term of office in 1978, A.P. Piskarskas. As the work expanded, the Laser Research Centre (LRC) was established in 1983 and A.P. Piskarskas was appointed its head. In the same year A.P. Piskarskas defended his PhD (now Habilitated Doctorate) thesis in Physics and Mathematics on "Wide Range Picosecond Parametric Light Generators and their Application in Spectroscopy of Ultrasonic Processes". 1984 A.P. Piskarskas was awarded the title of Professor. In the same year, together with his laser colleagues from Russia, Belarus, Ukraine and Uzbekistan, he was awarded the USSR State Prize for Science and Technology for his research on non-linear optics. Prof. A.P. Piskarskas held the position of the Head of KEK until 2012. Piskarskas is Professor Emeritus of Vilnius University. Prof. V. Sirutkaitis was elected Head of the Department of Quantum Electronics in 2012.

In 1978, after the construction of the new building of the Faculty of Physics in Saulėtekis Avenue, the Department moved to new premises. Until 1981, the posts of the Department were mainly economic, and therefore the researchers in these positions were on economic contracts. At the same time, in-depth fundamental and applied research was carried out in the fields of ultrashort pulse generation, parametric light generation and ultrafast spectroscopy. This work was widely known, and the Department was therefore eligible for budgetary funding for topics coordinated by the USSR State Scientific and Technical Committee. As a result, in 1981-1983 the Department received a large number of new posts of researchers and engineers and the number of staff increased to 70. Scientific laboratories were set up and equipped with the latest equipment with the help of economic contracts. This created favourable conditions for the development of research. Part of these funds were also used to maintain and improve the Department's teaching laboratory. When the budgetary and economic research groups were merged into the Laser Research Centre in 1983, part of the premises in the dormitory complex on Saulėtekio Avenue (Saulėtekio Avenue 10) were reconstructed into the Laser Research Laboratories. The reconstruction of the canteen into laboratories lasted for more than a year and involved the active participation of all the scientific and technical staff of the Department, who contributed in various ways to the construction and installation work.

Until 1991, economic contracts were mainly carried out for various scientific and industrial institutions of the USSR. In the period 1969-1990, 83 economic contracts were concluded for fundamental and applied research in the fields of non-linear optics, laser physics, laser material processing and laser medicine. In parallel, the development of various prototypes of laser devices started as early as 1983. These include: a picosecond spectrometer consisting of a picosecond laser and one or two parametric light generators; various optomechanical assemblies for laser circuits; stable ultra-short pulse lasers with feedback; optical harmonic generators; and special nanosecond pulse lasers. At that time, the number of teaching and research staff working in the field of quantum electronics had risen to 85. Following the completion of the economic contract for the S. Vavilov Institute of Optics in Leningrad in 1991, there were no more contracts with companies of the former USSR.

Terahertz Spectroscopy and Nonlinear Optical Phenomena group

 

The TSNOP research group focuses on generating and characterizing terahertz radiation and microfabricating optical elements using ultrafast laser systems. They apply Laser Induced Breakdown Spectroscopy (LIBS) to monitor plasma dynamics induced by femtosecond laser pulses, essential for understanding laser-material interactions. TSNOP also conducts advanced numerical simulations of nonlinear optical phenomena and terahertz wave propagation through complex materials. Collaborating with academic and industrial partners, the group supports optical applications and provides facilities for feasibility studies and batch production at the "NAGLIS" open access facility, advancing both theoretical knowledge and technological innovations in optical applications.

 
Research Topics
  • Development of novel methods for terahertz radiation generation, characterization and its applications
  • Numerical simulation of nonlinear optical phenomena in air including third harmonic and terahertz radiation generation
  • Microfabrication of transparent and metallic materials with femtosecond laser systems in order to produce various compact elements (filters, lenses, polarizers) suitable for terahertz spectral range
  • Numerical modelling of propagation of THz radiation through periodically modulated  surface-relief gratings
  • Laser-Induced Breakdown Spectroscopy (LIBS) research and its application for monitoring plasma induced by femtosecond laser pulses in air
 

Students, as an active part of the population, are faced with the need for safety both in their studies and working life. Even at the learning stage they must not only comply with safety requirements, but also know the basic safety principles in order to apply them in the future.

  1. Gintaras Dikčius, Justinas Galinis, Violeta Karenauskaitė, Laboratory Works in Physics. Manual of methodics, Vilniaus universitetas, 2015, ISBN 978-609-459-100-6 (online).
  2. B.H.Brown, P.V. Lawford, R.H. Smallwood, D.R. Hose, D.C.Barber, Medical physics, Taylor& Francis, 736 p., 1999, ISBN: 0750303670.
  3. Kirsten Franklin , Paulius Muir , Terry Scott , Lara Wilcocks , Paulius Yates, Introduction to Biological Physics for the Health and Life Sciences., UK, John Wiley and Sons, Ltd., 464 p., 2010, ISBN: 978-0-470-66592-3.
  4. B.H Brown, R.H Smallwood , D.C. Barber, P.V Lawford, D.R Hose. Medical Physics and Biomedical Engineering, (Series in Medical Physics and Biomedical Engineering), Bristol: Institute of Physics Publishing, 736 p., 1999, ISBN 0 7503 0368 9 (pbk).
  5. Andrew Duffy, Introductory physics course, Boston University, http://physics.bu.edu/~duffy/py106.html
  6. Ruediger Kramme ...[et al.], Springer handbook of medical technology, Berlin etc.: Springer, 1500 p., 2011, ISBN: 9783540746577.
  7. 1. Thomas D. Rossing (ed.), Springer handbook of acoustics, New York N.Y.: Springer, 1182 psl., 2007, ISBN: 9780387304465.
  8. Lasers in Medicine, ed. R.W. Waynant, CRC Press, 335 p., 2002, ISBN: 0849311462.
  9. . G.B.Benedek, F.M.H. Villars. Physics with Illustrative Examples from Medicine and Biology: Mechanics, 2nd edition, Springer-Verlag, 2000, ISBN: 038798769X.
  10. G.B.Benedek, F.M.H. Villars. Physics with Illustrative Examples from Medicine and Biology: Electricity and Magnetism, 2nd edition, Springer-Verlag, 2000, ISBN: 0387987541.
  11. Russel K. Hobbie, Bradlie J. Roth, Intermediate Physics for Medicine and Biology [Paperback], Springer, Fourth edition, 2010, ISBN-10: 1441921672 | ISBN-13: 978-1441921673.
  12. J.Butrimaitė, A.Dementjev, G.Dikčius, R.Gadonas, J. Jasevičiūtė, V. Karenauskaitė, V. Sirutkaitis, V. Smilgevičius (2003). Vadovėlis Fizika biomedicinos ir fizinių mokslų studentams 1 dalis, Vilnius, Vilniaus universiteto leidykla, 212psl. ISBN 9986-19-595-9. El. vadovėlis: ISBN 978-9955-33-538-2 (lith.).
  13. J.Butrimaitė, A.Dementjev, G.Dikčius, R.Gadonas, J. Jasevičiūtė, V. Karenauskaitė, V. Sirutkaitis, V. Smilgevičius (2004). Vadovėlis Fizika biomedicinos ir fizinių mokslų studentams 2 dalis, Vilnius, Vilniaus universiteto leidykla, 351psl. ISBN 9986-19-595-9 (lith.).
    Biofizyka, red. F. Jaroszyk, Warszawa, 862 p., 2001. (pol.)
  14. Any physics textbook for higher education

I. Preparation for laboratory work

  1. Once the student is familiar with the assigned task and its theoretical aspects, before beginning the work he must clarify the work methodology, the operation principles of the equipment, the procedures, the purpose electrical and optical circuit elements, know what laws to verify, what relationships he/she will explore. The list of laboratory works and their descriptions can be found here.
  2. The student writes up a report of his/her work in the laboratory work journal. The laboratory work journal is usually an A4 or A5 format exercise book (or A4 size sheets neatly attached to a document folder), in which, according to the laboratory requirements, the student describes all the work performed in the laboratory. The title page of the journal must include the student's full name, study program, year, group, and the name of the teacher who manage laboratory works.

 

II. Recommendations for recording in the laboratory journal

Work shall be entered in the journal in the following order:

  1. Work title.
  2. Purpose and tasks.
  3. Theoretical topics reflecting the themes related to the lab. work purpose. The theoretical topics and the associated work tasks are usually provided in the methodological literature of every laboratory.
  4. Summary of the theoretical part, i.e., short summary of the literature: the basic laws, propositions, formulas, research, the essence of the research method, etc.
  5. Lab. work devices and tools. Indicate all equipment necessary for the work and their characteristics. When describing devices, you must provide the name, type (brand), and the measurement range. If the accuracy class is known, you must indicate the absolute or relative error of the device.
  6. The connecting circuits used in the work or the structural diagrams of the devices.
  7. Workflow. Briefly describe the main stages of the experiment, and the workflow.
  8. Measurement results. Record the measurement results in tables, note the experiment conditions, calculate the physical quantities and plot graphs: provide well-structured diagrams, oscillograms, or spectrograms, indicate the final results and evaluate their accuracy.
  9. Discussion of results and conclusions. The relationships and results obtained are explained on the basis of theoretical principles; the values obtained are compared with theoretical results and with the values obtained by different methods and under different conditions; the main causes of errors are identified together with ways to reduce them, and so on. Specific conclusions are formulated.
  10. References. List of consulted references used for preparing the laboratory work.

 

A part, corresponding to items 1-6, can be written in advance when preparing for laboratory work at home, and then checked in the laboratory in case there are changes in the work tasks, means or equipment. If so, then the changes are recorded in the work journal. The other items are recorded once in the laboratory.

All figures (charts, graphs, diagrams) and tables are numbered. The title is written beneath the figures and above the tables.

The list of references is compiled according to the standards governing the publication of bibliographic descriptions. The form of the basic bibliographic data depends on the specific requirements for publishing: if the number of authors of a book is three or less, their names are written at the beginning, otherwise the authors' names are written after the book title. Following that, appear the place of publishing, the name of the publisher, year of publication and the number of pages.

 

III. Carrying out the work, its organization and evaluation

  1. Once the student comes to the lab he/she must show the teacher he/she is prepared for the work and get permission to carry it out. Prior to experimental measurements, the technician or engineer will briefly check that the student knows the work methods and specify what specific tasks he/she will perform. The student must answer the teacher‘s, engineer‘s (or technician‘s) questions related to the theoretical topics and practical tasks.
  2. In addition, the student must submit a report to the teacher on any previous work carried out together with calculations, graphs, conclusions, and so on (if he was unable to write the report at that time.)
  3. If the student has not prepared for the new work at home, then he/she must prepare for it in the laboratory according to the requirements set by the laboratory staff. When the student has finished, the teacher or engineer can re-examine the student‘s readiness. If the student is well prepared, he/she will be permitted to carry out the task in extra time with another group, provided the work station in the laboratory is free.
  4. When carrying out laboratory work, students must comply with general safety procedures and requirements (with which they will be familiarized by laboratory staff and/or teachers during the introductory class), must not obstruct the work of their colleagues, must remain at their work station and not leave equipment switched on unattended.
  5. Breaks will be chosen individually.
  6. Questions concerning all work and organizational issues may be addressed to the laboratory staff and teachers.
  7. Completion of the tasks will be first certified by an engineer (or technician) signing the logbook with the word "Done." The work then goes to the teacher who evaluates the task with a grade and certifies the evaluation with his/her signature and the note „Registered“. When defending the work for the teacher, the student should be able to explain the results and their accuracy, and should know the theoretical themes. Performance of the overall task will be evaluated with a final grade, which is recorded in the work accounting table.
  8. If two laboratory tasks remain without defence, the student will not be permitted to carry out further work. If the student wishes to carry out the missed work with another group, he/she must obtain the teacher‘s agreement and written permission in the work journal, and negotiate a time for the work with the laboratory staff.
  9. If the student has not had time to complete and defend all his/her laboratory works by the end of the semester, the laboratory staff may agree to conditions for carrying them out, and the teacher may agree to conditions for their defence, provided that the student has/her shown extenuating circumstances, submitted appropriate documentation and received the required permission from the Dean's Office and/or department chairs. In all other cases, the laboratory work will not be registered. Without a certificate of laboratory work completion, the student cannot sit the physics exam.

These requirements have been prepared on the basis of Vilnius University, Faculty of Physics, 1992 04 28 (Protocol. 4-92), General Laboratory practice regulations, rules and safe and P.J.Žilinskas‘ book "Recommendations for the Preparing Written Work" (VU, 2000; in Lithuanian).

 

The VU Physics Faculty, Laser Research Center, General Physics Teaching Laboratory, organizes training for secondary and high school students; college and professional school students, and physics teachers at all levels:

  1. Physics laboratory workshops.
  2. Educational tours and demonstrations.

We believe that this is a cheaper and more useful teaching/learning way for those educational institutions and organizations that do not have a sufficiently good material and/or technical base for physics laboratory work.

We kindly invite those who are interested in workshops or excursions, or who would like to obtain more detailed information, to contact the laboratory staff at the listed phone numbers or by email at the addresses below.

 

 

 

 

 

 

GENERAL PHYSICS TEACHING LABORATORY

ROOM 521, SAULĖTEKIO AVE. 9, BLDG. III, VILNIUS

TEL.: 852193097

Fundamental and applied research on ultrafast nonlinear laser-matter interactions in transparent bulk materials and photonic crystal fibers for the development of compact high average power ultrashort pulse light sources based on supercontinuum generation, optical parametric amplification, fiber-based laser amplification, frequency conversion and pulse post-compression. 

Scientific research topics: 

  • Nonlinear propagation and supercontinuum generation in bulk materials, photonic crystal fibers and photonic crystals;
  • Light-driven structural modifications of transparent materials and related nonlinear optical phenomena;
  • Generation of few optical cycle pulses via spectral broadening, optical parametric amplification and pulse post-compression;
  • Development of high repetition rate tunable wavelength UV-VIS femtosecond laser systems;
  • Development of sub-nanosecond optical parametric generators and amplifiers.

 

Research spotlight!

oea-cover.jpgThe generation of power- and wavelength-scalable few optical cycle pulses remains one of the major challenges in modern laser physics. Over the past decade, the development of table-top optical parametric chirped pulse amplification-based systems was progressing at amazing speed, demonstrating excellent performance characteristics in terms of pulse duration, energy, peak power and repetition rate, which place them at the front line of modern ultrafast laser technology. At present, table-top optical parametric chirped pulse amplifiers comprise a unique class of ultrafast light sources, which currently amplify octave-spanning spectra and produce carrier-envelope phase-stable, few optical cycle pulses with multi-gigawatt to multi-terawatt peak powers and multi-watt average powers, with carrier wavelengths spanning a considerable range of the optical spectrum.OEA.png 

This Article gives an overview on the state of the art of table-top optical parametric chirped pulse amplifiers, addressing their relevant scientific and technological aspects, and provides a short outlook of practical applications in the growing field of ultrafast science.

A. Dubietis, A. Matijošius, Table-top optical parametric chirped pulse amplifiers: past and present (REVIEW), Opto-Electronic Advances 6, 220046 (2023).

 

 

 

 


oea-cover.jpgHigh repetition rate femtosecond filaments in transparent solids produce conical third harmonic generation due to filament-induced material reorganization in the form of periodic volume nanogratings. Here we report on conical third harmonic generation that accompanies supercontinuum generation in fused silica using broadly tunable femtosecond pulses. The measurement of third harmonic cone angles with driving wavelengths in the 1–3-μm range fully supports the noncollinear phase-matching scenario that involves a reciprocal lattice vector of the filamoptlett figureent-inscribed nanograting. The nanograting provides an octave-spanning phase-matching bandwidth, as attested by the measurements of the angle-resolved spectra of broadband conical third harmonic emission.

R. Grigutis, V. Jukna, G. Tamošauskas, A. Dubietis, Broadband conical third harmonic generation in femtosecond filament-modified fused silica, Optics Letters 48, 506-509 (2023).

 

 

oea-cover.jpg

The work discloses a flexible, non-destructive, aberration-free, and automated periodic poling quality evaluation technique of the periodically poled crystals in the whole volume of the crystal with very high control and resolution. The method is based on a crystal translation in the directions perpendicular to the pump laser beam and the simultaneous recording of the parametric signal conversion efficiency in a simple single-pass parametric lightoptik figure generator setup. This technique allowed us to investigate and quantitatively describe the ferroelectric domain structure homogeneity of the periodically poled lithium niobate and potassium titanyl phosphate crystals with single, multi, and fan-out grating designs and offers a practicable overall efficiency assessment of the quasi-phase-matched device.

J. Banys, J. Pimpė, O. Balachninaite, V. Jarutis, J. Vengelis, Non-destructive periodic poling quality evaluation of MgO:PPLN and Rb:PPKTP crystals based on crystal translation and parametric light generation, Optik 277, 170686 (2023).

 

 

 

scientist

We are constantly looking for curious and motivated students to join our laboratories!

Interested? Contact the LRC director or leaders of the research teams of interest.

 

VU LRC Summer School: Advanced Experimental Training in Laser Physics and Ultrashort Pulse Characterization

 

 

Join us at Vilnius University Laser Research Center for our advanced VU LRC Summer School from August 19th to 23rd, 2024. This program offers a series of intensive courses on critical topics in laser physics and ultrashort pulse characterization:

  • Measurement of few-cycle pulse temporal characteristics by dispersion scan technique
  • Ultrashort laser pulse characterization techniques
  • Optical damage morphology and threshold measurements
  • Laser beam shaping techniques for femtosecond laser pulses
  • Femtosecond supercontinuum generation in bulk solid-state materials

Enhance both your theoretical and practical skills through hands-on experiences in a small group setting. Don’t miss this opportunity to explore cutting-edge laser technologies. For more detailed information and application procedures, please visit Laserlab-Europe.

 

A science popularisation publication on Phys.org: X-photon 3D nanolithography (phys.org)

 

x photon 3d nanolithog 1

3D resolution bridge (RB) printing and line analysis. (a) Illustration of GDD pre-compensated pulses propagating to the objective of NA = 1.4. After they pass the objective, τ = 100 fs at each λ; (b) Illustration of the RB method. The suspended single-voxel-wide lines are photopolymerized between support pillars, each row with different light intensity; (c) SEM image of the entire RB object with lines and support pillars. The white scale bar at the bottom right corner is 20 µm; (d) Scheme representing calculated nef for used excitation light and their arrangement over measured absorbance spectra of photosensitized SZ2080. Gray vertical arrows visualize a number of photons for ground-to-excited state transition. Credit: Virtual and Physical Prototyping (2023). DOI: 10.1080/17452759.2023.2228324

 

 

light.adv.mnf.png

LIGHT: ADVANCED MANUFACTURING - Call for papers to Special Issue on Extreme Manufacturing

https://light-am.com/news/index_tabliod_en/201ef0b9-fb9a-49ab-a6be-485e0fdd84f3_en.htm

Submission deadline: 31 October 2023

 

Prof. Boris Chichkov (Leibniz University, Hannover) visited LRC after presenting a tutorial lecture on “Laser Printing” in the OPEN READINGS - 66TH INTERNATIONAL CONFERENCE FOR STUDENTS OF PHYSICS AND NATURAL SCIENCES, April 18th-21, held in Vilnius.

Boris2

 

Thirty years of optical parametric chirped pulse amplification (OPCPA)!

The state of the art of table-top OPCPA systems in terms of achieved pulse duration (expressed in multiple of optical cycles), central wavelength, spectral bandwidth, nonlinear crystals used as amplifying media, and year of inception.IMAGE: The state of the art of table-top OPCPA systems in terms of achieved pulse duration (expressed in multiple of optical cycles), central wavelength, spectral bandwidth, nonlinear crystals used as amplifying media, and year of inception.

In 2022, OPCPA celebrates its 30th anniversary and the authors of this article share their views at these fascinating developments from historical and technological perspectives, giving a comprehensive account on the state of the art of table-top OPCPA systems, addressing their relevant scientific and technological aspects, design concepts, performance characteristics and growing practical applications in diverse fields of ultrafast science.

Article reference: A. Dubietis, A. Matijošius, Table-top optical parametric chirped pulse amplifiers: past and present, Opto-Electron Adv 6, 220046 (2023). doi: 10.29026/oea.2023.220046 

 

 

lsms

Femtosecond laser micromachined samples

 

Our group investigates and applies versatile femtosecond micromachining technology in various research fields with the main focus on photonics applications. Unique capabilities of laser-induced 3D modifications of optical properties in transparent materials as well as selective laser ablation provides the means for design and develop of new functional photonic components, perform novel fundamental research on topics dealing with light-mater interaction phenomena or foster creativity with endless surprises what ultrafast laser pulse can do to the ususpected material/atom/friend.

Scientific Research Topics

  • Innovative strategies and new optomechanical solutions for femtosecond microprocessing: burst laser processing, femtosecond UV processing using interferometric techniques, surround processing, processing with spatially tailored laser beams (Gaussian-Bessel, Top-Hat femtosecond beams).

  • Microprocessing of transparent dielectrics for photonics applications: selective surface ablation for diffractive optics fabrication using UV laser pulses, volumetric modification, free-form surface engraving in glasses and dielectrics.

  • Fundamental research on laser-matter interaction: Time-resolved holographic imaging of material response to femtosecond laser pulses.

 

In cooperation with the National Cancer Institute, studies are being conducted on the optical properties of different nanoparticles in various media after the modification of surface coatings; photoluminescent and plasmonic gold nanoparticles are synthesized, and the spectral features, stability, photostability, spatial parameters and nanoparticle size distribution are measured. After the application of physical methods for the characterization of nanoparticles, the accumulation dynamics of nanoparticles in cancerous cell lines, their uptake mechanisms and cytotoxic effects are studied. The nanoparticles are tested as possible contrast agents for X-rays, their pharmacokinetic properties are accessed. Aiming to make a bifunctional radioactive-fluorescent marker, a metastable technetium 99mTc is attached to the photoluminescent gold nanoparticles, and the optical properties, stability and distribution of the complex are investigated in experimental animals. The radiological studies are also performed with 99mTc -conjugated magnetic nanoparticles and Gd3+-doped NaYF4 upconvertion nanoparticles.

Another research direction comprises spectroscopic studies of tetrapyrrolic photosensitizers, their photochemical transformations in model biologic media and in the presence of antioxidants. In cooperation with the State Research Institute Centre for Innovative Medicine, research is being carried out on the applicability of endogenous porphyrins for optical diagnostics and phototherapy of rheumatoid arthritis.

Here is a list of some of the programmes available to LTC staff and students. If you have further questions, please contact Dr. D. Paipula.

Subcategories

Announcements (LTC)

scientist

We are constantly looking for curious and motivated students to join our laboratories!

Interested? Contact the LRC director or leaders of the research teams of interest.

 

 

 

 

 

 

Laser Research Center

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