Services and prices

The service is performed with the femtosecond laser microfabrication set. It consists of a Pharos femtosecond laser and the Aerotech large motion five-coordinate precision positioning module using a unique set of measurement and diagnostics.

Properties of the laser: central wavelength is 1030 nm. The integrated harmonic module provides:

• 515 nm (maximum second harmonic conversion efficiency is 59 %);
• 343 nm (maximum third harmonic conversion efficiency is 29 %);
• 257 nm (maximum fourth harmonic conversion efficiency is 5 %).

Maximum average power is P = 20 W. Pulse energy E_imp>400 μJ at 1-5 kHz frequency range. The duration of pulse is τ < 300 fs. Beam quality: M2 < 1.3. Beam ellipticity >0.99. (0.99 at P = 1 W and 610 kHz).

Aerotech positioning module: the system is assembled on a granitic plate with control electronics and appropriate software. 

Technical positioning parameters:

1. X axis (ABL1500WB): maximum motion is 300 mm, speed 2 m/s;

2. Y axis Y (ABL1500): maximum motion is 300 mm, speed 2 m/s;

3. Z axis (ABL15020): maximum motion 200 mm, speed 2 m/s, accuracy ± 0.5 μm.

Technical parameters of rotating axes (ANT130-R):

1. Diameter of rotating part is 125 mm, accuracy ± 3 arc sec, resolution 0.9;

2. Diameter of rotating part is 120 mm, accuracy ±5 arc sec, resolution 0.01 μrad.

Total motion of rotating axes: ± 360°. Also, the system has a two-axis beam control system for 1030 nm wavelength radiation with 10 m /s positioning speed and 1.5 m / s marking speed. There is also an integrated focal tracking system and the computer with installed software for the management of 2-axes beam control and 5-axes sample positioning systems.

Research and services are carried out by using:

1. Pharos-SP high-repetition frequency tunable femtosecond laser system with the Orpheus / Lyra parametric amplifier;

2. Precision three-coordinate positioning system with a galvanometric beam control subsystem;

3. Technological system for polymeric layer formation and processing;

4. Electronic microscope TM-1000 (from VU OAC Laser Research Centre facility “Naglis”);

5. Unique set of equipment and diagnostics for nanophotonic systems.

Properties of femtosecond laser: central wavelength 1030 ± 10 nm, pulse repetition rate can be tuned in the 1-1000 kHz range, pulse duration ≤200 fs, average power ≥6W at 50-200 kHz, beam quality is M2≤1.3.

Properties of the parametric optical amplifier: tuning range is 350-2600 nm, maximum efficiency 15 % (signal+idler), conversion efficiency of integrated second harmonic generator is >50 % (515 nm).

Laser nanophotonics research:

1. Numerical modeling, laser formation, geometry and optical properties (focus, collimation, phase modulation) description of multifunctional (refractive / diffractive) and integrated (on the optical fiber tip) micro – optical elements (10 – 100 μm).

2. Artificial three-dimensional frame laser formation for cell biology and tissue engineering applications. Biologically inert and degrading polymers can be used and a carcass can be made of several different materials. Pore size and filling factor can be varied from 1 to 100 μm and 20-80%, respectively.

3. Laser formation of nanophotonic elements in polymers and transparent materials. With the laser, two-dimensional and three-dimensional fixed and gradually variable period photonic crystals can be formed. Their period can be from 0.5 to 10 μm. Numerical modeling of these items and characterization of their light control properties.

Measurements are performed with the LIDT test station, nanosecond Nd:YAG laser with single longitudinal mode and the equipment set for measuring laser radiation temporal, spatial and energetic parameters.

Laser parameters:

maximum pulse energy 20 mJ, (20 W average power), central wavelength 1064 nm, pulse duration < 8 - 11 ns and 1 kHz pulse repetition rate.

Measurements can be performed for laser pulse repetition from 1 Hz to 100 KHz and for 1030-1064 nm, 515-532 nm and 343-355 nm laser radiation wavelengths. The LIDT test station, Inolas SpitLight Hybrid III nanosecond laser with single longitudinal and transversal mode and 2-5 harmonics generation unit and the equipment set for measuring laser radiation temporal, spatial and energetic parameters are used.

Inolas SpitLight Hybrid III laser

Pulse energy:

• ≥ 400 mJ @ 1064 nm wavelength,
• ≥ 190 mJ @ 532 nm wavelength,
• ≥ 100 mJ @ 355 nm wavelength,
• ≥ 50 mJ @ 266 nm wavelength,
• ≥ 8 mJ @ 213 nm.

Pulse duration 8-11 ns, pulse repetition rate ̴50 Hz, beam size ̴ 6 ± 1, divergence < 0.5 mrad.

An equipment set for measuring laser radiation temporal, spatial and energetic parameters is also used. It consists of universal Ophir power meters and thermopile-type power measurement heads, a Spiricon 190-1100 nm spectral range CCD camera, oscilloscopes, and photodiodes.