CAJ | 학술논문

理论分析了被动调Q固体激光泵浦的光参量振荡器.利用激光二极管泵浦,Cr4+:YAG被动调Q Nd:YAG激光泵浦的内腔光学参量振荡器,磷酸氧钛钾(KTP)晶体作为非线性晶体,获得了高重复频率,高峰值功率的人眼安全激光输出,改变Cr4+:YAG被动调Q晶体的参数,可获得不同重频不同脉宽的调Q激光脉冲;当Cr4+:YAG晶体初始透过率为T0=80%时,获得了平均功率大于3.8 W,重频约80 kHz的1.572 μm波长信号光输出,脉宽30 ns,脉冲峰值功率达到1.58 kW.
이론분석료피동조Q고체격광빙포적광삼량진탕기.이용격광이겁관빙포,Cr4+:YAG피동조Q Nd:YAG격광빙포적내강광학삼량진탕기,린산양태갑(KTP)정체작위비선성정체,획득료고중복빈솔,고봉치공솔적인안안전격광수출,개변Cr4+:YAG피동조Q정체적삼수,가획득불동중빈불동맥관적조Q격광맥충;당Cr4+:YAG정체초시투과솔위T0=80%시,획득료평균공솔대우3.8 W,중빈약80 kHz적1.572 μm파장신호광수출,맥관30 ns,맥충봉치공솔체도1.58 kW.
The behaviour of passively Q-switched solid-state lasers containing intracavity optical parametric oscillators(OPOs) is described in detail. A diode-pumped passively Q-switched Nd:YAG, Cr4+: YAG laser was employed to generate a high-repetition-rate, high-peak-power eye-safe laser beam with an intracavity optical parametric oscillator (OPO) by use of a KTiOPO4 (KTP) crystal. Different ranges of repetition rates and pulse widths are obtained by using absorbers of different optical densities. With a Cr4+:YAG wafer of T0=80% low-intensity transmission, 3.8 W average power at 1.572 μm wavelength and repetition rate up to 80 kHz with pulse width as narrow as 30 ns are obtained. The peak power is up to 1.58 kW.