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29 April 2008Continuous-wave diode end-pumped Nd: YAG and Nd:GdVO4 lasers passively Q-switched by Cr4+: YAG saturable absorbers
We have developed all-solid-state continuous-wave diode end-pumped Nd:YAG and Nd:GdVO4 lasers that were
passively Q-switched by Cr4+:YAG saturable absorbers. The Nd:YAG laser delivered laser pulses with 138 mJ maximum
energy and duration of 42 ns, with 3.3 W average power at 1.06 mm for 13.3 W of pump power at 807 nm. An average
power at 1.06 mm of 1.4 W was obtained from Nd:GdVO4 under pumping with 7.2 W power at 808 nm. The pulse
energy and the pulse duration were 41 mJ and 40 ns, respectively, which correspond to 1 kW pulse peak power. The laser
pulses characteristics are discussed for Cr4+:YAG saturable absorbers with different values of the initial transmission.