Kajava T T, Gaeta A L
Opt Lett. 1996 Aug 15;21(16):1244-6. doi: 10.1364/ol.21.001244.
We investigated the properties of a diode-pumped Nd:YAG laser that is passively Q switched by a thin, singlecrystal GaAs wafer. At 3 W of incident pump power, the laser produced stable 7-ns pulses with 20 microJ of energy at a 6-kHz repetition rate. For pump powers up to 2.2 W, which resulted in 13.2-microJ pulses, the output mode was TEM(00). The shortest pulses that we observed were 3 ns in duration. In addition to saturable absorption, we find that two-photon absorption and free-carrier effects determine pulse formation.
我们研究了一种由薄的单晶砷化镓晶片被动调Q的二极管泵浦钕：钇铝石榴石激光器的特性。在3瓦的入射泵浦功率下，该激光器以6千赫的重复频率产生能量为20微焦的稳定7纳秒脉冲。对于高达2.2瓦的泵浦功率（产生13.2微焦的脉冲），输出模式为TEM(00)。我们观察到的最短脉冲持续时间为3纳秒。除了饱和吸收外，我们发现双光子吸收和自由载流子效应决定了脉冲的形成。
