ULTRAVIOLET GENERATION WITH PASSIVELY Q-SWITCHED MICROCHIP LASERS

First, second, third, fourth, and fifth harmonics of the output of a f iber-pumped passively Q-switched Nd:YAG microchip laser have been obta ined at pulse energies of 8.0, 3.5, 0.3, 0.7, and 0.01 mu J, respectiv ely, in an optical head occupying a volume of less than 3 cm(3). This compact, economical all-solid-state source provides coherent subnanose cond multikilowatt infrared, visible, and ultraviolet pulses at repeti tion rates in excess of 10 kHz. (C) 1996 Optical Society of America.