内腔倍频被动调QNd∶YVO_4/KTP激光特性的研究  

Study of Intra-Cavity Frequency-Doubling of a Nd∶YVO_4 Laser PassivelyQ-Switched with GaAs

作　　者：赵宏明[1] 赵圣之[1] 陈磊[1] 杨克建[1] 

机构地区：[1]山东大学信息科学与工程学院,山东济南250100

出　　处：《中国激光》2005年第1期35-38,共4页Chinese Journal of Lasers

基　　金：山东省科技发展计划项目(013060102);教育部博士点基金资助项目

摘　　要：实现了激光二极管(LD)抽运Nd∶YVO4/KTP,GaAs饱和吸收体被动调Q绿激光运转。测量了GaAs不同 厚度情况下的脉冲重复率、脉冲宽度、单脉冲能量及峰值功率随抽运功率的变化关系。在抽运功率3.22W下,300 μm厚的GaAs获得了381kHz的高重复率,53.2ns的脉冲宽度,0.18μJ的单脉冲能量。通过求解内腔倍频GaAs 调Q工作原理的耦合波方程组,所得的理论值与实验结果相符。By using GaAs saturable absorber, the running of a diode-pumped Q-switched intra-cavity frequency-doubled Nd:YVO4/KTP laser is realized. The dependences of pulse width, pulse repetition rate, pulse energy and peak power on pump power are measured with different thickness of GaAs. At 3.22 W of pump power, the laser Q-switched by 300 μm GaAs produces 53.2 ns pulses at a pulse repetition rate of 381 kHz. The pulse energy is 0.18 μJ. The rate equations of intra-cavity frequency-doubling laser Q-switched by GaAs are introduced to analyze the experimental results. The numerical calculations of the rate equations are consistent with the experimental results.

关 键 词：激光技术 GaAs 被动调Q ND:YVO4/KTP 倍频 

分 类 号：TN248.1[电子电信—物理电子学]