High repetition rate 300 ps pulses ultraviolet source passively Q:switched microchip laser and a multipass amplifier

Frédéric Druon (1) , François Balembois (1) , Patrick Georges (1) , Alain Brun (1)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Elsa

We demonstrate a new kind of picosecond laser source in the UV at a high repetition rate of 245 kHz, using only passive, compact, and simple elements. This system is based on a microchip laser and a very efficient multipass amplif ier, both pumped with recently developed high-brightness laser diodes. The system has been optimized to deliver, at a high repetition rate, subnanosecond pulses at the wavelength 355 nm with an energy per pulse of close to 1 mJ (38-mW average power). This source is to our knowledge the f irst totally passive 300-ps UV laser source at this high repetition rate.

Domaines: Optique [physics.optics]

Frédéric Druon, François Balembois, Patrick Georges, Alain Brun. High repetition rate 300 ps pulses ultraviolet source passively Q:switched microchip laser and a multipass amplifier. Optics Letters, 1999, 24 (7), pp.499-501. ⟨hal-00761306⟩