Experimental study on pulse characteristics of diode-pumped Q-switched Nd:KGW laser

Diode-pumped acoustic-optical (AO) Q-switched, passively Q-switched, and double Q-switched Nd:KGW lasers were realized, respectively. Their pulse characteristics were researched. Experiments prove double Q-switching laser can generate a symmetric and shorter pulse when compared with purely AO and passive Q-switching. The double Q-switched laser pulse width of 37.7 ns has been achieved at the incident pump power of 3 W.