Ultrafast spectroscopy facility

Unit: Faculty of Physics

Keywords: Ultrafast spectroscopy, Ti:Sapphire amplifier, Libra-USP-HE, TOPAS-800

Responsible person: Prof. Mikas Vengris , tel. 8 5 2366031,

Facility is suitable for ultrafast spectroscopy, investigation of nonlinear optical interactions, laser radiation and materials interactions.

The equipment set consists of:

1) Regenerative Ti:Sapphire amplifier of femtosecond pulses with 30W solid-state pump laser Libra-USP-HE and unique set of spectroscopy equipment and diagnostic. Central wavelength of the amplified pulses is 800 nm, maximum pulse repetition rate 1 kHz, pulse duration < 50 fs. Pulse energy at 1 kHz repetition rate is > 3.5 mJ. It has an option of switchover between 505 fs pulse and 11010 fs pulse amplification modes.
2) Light Conversion parametric generator TOPAS-800 (2 units). Both are pumped by the first harmonic of Ti:Sapphire amplifier. Spectral range: 1150 - 2600 nm. One of them has an opportunity to use difference frequency method for expansion the spectral range: 100 nm - 20 mm.