CAJ | 학술논문

利用通过金属化学气相沉积法长成的AlGaInAs饱和吸收体,对808 nm LD泵浦的Nd∶YVO_4键合晶体进行被动调Q,获得了波长为1.06 μm的激光脉冲,测量了脉冲能量、脉冲宽度、脉冲重复率随泵浦功率的变化.当泵浦功率为10.57 W时,激光平均输出功率为3.45 W,斜效率为39%,重复频率达到最大值101 kHz.当泵浦功率为8.07 W时,脉冲宽度达到最小值1.76 ns.利用速率方程对该激光器进行理论分析,计算出输出脉冲能量、峰值功率、脉冲宽度和重复频率的理论值,实验结果和理论结果基本一致.
이용통과금속화학기상침적법장성적AlGaInAs포화흡수체,대808 nm LD빙포적Nd∶YVO_4건합정체진행피동조Q,획득료파장위1.06 μm적격광맥충,측량료맥충능량、맥충관도、맥충중복솔수빙포공솔적변화.당빙포공솔위10.57 W시,격광평균수출공솔위3.45 W,사효솔위39%,중복빈솔체도최대치101 kHz.당빙포공솔위8.07 W시,맥충관도체도최소치1.76 ns.이용속솔방정대해격광기진행이론분석,계산출수출맥충능량、봉치공솔、맥충관도화중복빈솔적이론치,실험결과화이론결과기본일치.
The AlGaInAs semiconductor saturable absorber grown by Metal-organic Chemical Vapor Deposition is used as the saturable absorber in a 808 nm LD-pumped passively Q-switched Nd∶YVO_4 laser at 1.06 μm.The dependences of the pulse energy,pulse width,pulse repetition rate on the pumping power are measured.With an incident pump power of 10.57 W,an average output power of 3.4 W is obtained,and the corresponding slope efficiency is 39%.At this pump power,the repetition rate reaches the maximum value of 101 kHz.The Q-switched pulse width reaches the minimum of 1.76 ns with an incident pump power of 8.07 W.Using the rate equations of passively Q-switched lasers,the theoretical results for the pulse energy,pulse width,pulse repetition rate are obtained,which show an agreement with the experimental results on the whole.