内腔式KTP光学参量振荡器的实验研究  

Experimental investigation of intracavity KTP optical parametric oscillator

作　　者：张凤娟[1] 王加贤[2] 王红华[3] 

机构地区：[1]无锡科技职业学院尚德光伏学院,江苏无锡214028 [2]华侨大学信息科学与工程学院,福建泉州362021 [3]烟台南山学院自动化工程学院,山东烟台265706

出　　处：《激光与红外》2010年第5期484-487,共4页Laser & Infrared

基　　金：福建省自然科学基金项目(No.A0310022)资助

摘　　要：在脉冲氙灯抽运的Nd∶YAG被动调Q激光器腔内,插入非临界相位匹配KTP晶体,构成内腔式KTP光学参量振荡器,获得脉宽3 ns、单脉冲能量10 mJ、中心波长1.568μm的人眼安全激光输出。当光学参量振荡器的腔长分别为3 cm,6 cm和8 cm时,得到的信号光脉冲的时间宽度分别为6 ns,4 ns和3 ns。当氙灯电注入能量为26 J时,输出的信号光出现双脉冲。实验上比较了Nd∶YAG激光器不同的谐振腔结构和参量对信号光脉冲的影响,并从理论上加以解释。An eye-safe laser pulse with 3 ns pulse duration,10 mJ output energy and 1.568 μm central wavelength was generated from a intracavity KTP optical parametric oscillator.OPO was formed by putting a noncritically phase-matched KTP crystal inside a passively Q-switched Nd∶YAG laser pumped by a pulsed Xe lamp.When the cavity length of the optical parametric oscillator were respectively 3 cm,6 cm and 8 cm,the pulse duration of signal laser were respectively 6 ns,4 ns and 3 ns.The double pulses were observed when the Xe electrical input energy was 26 J.The influence of the different Nd∶YAG laser resonator structure and parameter on the signal pulse were compared experimentally and analyzed theoretically.

关 键 词：光学参量振荡器 KTP晶体 被动调Q 非临界相位匹配 

分 类 号：TN248.34[电子电信—物理电子学]