LED-pumped femtosecond Cr:LiSAF regenerative amplifier system

Hussein Taleb (1) , P. Pichon (1) , Frédéric Druon (1) , François Balembois (1) , Patrick Georges (1)

1 Laboratoire Charles Fabry / Lasers

We report on the first, to the best of our knowledge, LEDpumped femtosecond regenerative amplifier. It is based on a Cr:LiSAF crystal pumped by 2240 blue LEDs via a Ce:YAG luminescent concentrator. The amplifier was seeded by pulses from a Ti:sapphire oscillator at 835 nm temporally stretched from 90 fs to 100 ps. At the output of the regenerative amplifier, we obtain 1 mJ pulse energy at a 10 Hz repetition rate, given by the frequency of the LED-pumping module. After compression, we obtain 100 fs pulses with a spectral bandwidth of 10 nm at 835 nm.

Mots clés: OCIS codes: (140.7090) Ultrafast lasers; (140.3280) Laser amplifiers; (160.6990) Transition-metal-doped materials; (230.3670); Light-emitting diodes; (140.5560) Pumping

Domaines: Optique / photonique

Hussein Taleb, P. Pichon, Frédéric Druon, François Balembois, Patrick Georges. LED-pumped femtosecond Cr:LiSAF regenerative amplifier system. Optics Letters, 2021, 46 (10), pp.2421. ⟨10.1364/OL.424313⟩. ⟨hal-03272685⟩