A laser diode directly end-pumped, passively Q-switched Nd : YVO4/Cr : YAG
laser is presented in this paper. With 600 mW incident pump laser, Q-switch
ed 1064 nm laser with an average power of 138 mW, pulse width of 19.8 ns, r
epetition rate of 170.1 kHz and peak power of 40.96 W is obtained. When a K
TP crystal was inserted into the cavity, Q-switched 532 nm laser with an av
erage power of 56 mW, pulse width of 28.4 ns, repetition rate of 118.2 kHz
and peak power of 16.7 W is obtained at last. (C) 2001 Elsevier Science Ltd
. All rights reserved.