High average power, side-pumped passively Q-switched laser of 1064 nm by using composite crystal Nd: YAG/Cr~(4+): YAG/YAG

摘要

A side-pumped passively Q-switched 1064 nm laser system by using Nd: YAG/Cr(4+): YAG/YAG composite crystal is demonstrated for the first time. Under pump power of 180 W, the maximum average output power of 85.6 W is obtained, with the pulse width of 140 ns and the repetition rate of 14.3 kHz, corresponding single pulse energy of 6.0 mJ and peak power of 42.7 kW. To our knowledge, this is the maximum average power of 1064 nm passively Q-switched laser which has reported.