同步泵浦KGd(WO_(4))_(2)的反斯托克斯光的研究  

Research on Anti-Stokes Light of Synchronously Pumped KGd(WO_(4))_(2)

作　　者：薛瑶瑶 王春磊 陈檬[1] Xue Yaoyao;Wang Chunlei;Chen Meng(Institute of Laser Engineering,Department of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学材料与制造学部激光工程研究院,北京100124

出　　处：《激光与光电子学进展》2022年第1期191-199,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(U1631240)。

摘　　要：研究了窄间隔脉冲串同步泵浦条件下,基于KGd(WO_(4))_(2)(KGW)晶体的反斯托克斯光的产生。采用KGW晶体作为拉曼晶体,脉冲串皮秒激光器作为泵浦源,波长为1064 nm,脉冲重复频率为1 kHz。采用平平腔、平凸腔、凹凸腔三种结构分别作为同步拉曼腔,分别研究了三种腔结构下产生反斯托克斯光的阈值。实验证明,同步拉曼腔采用平凸腔、凹凸腔结构时,产生了阈值低于二阶斯托克斯光的反一阶斯托克斯光的低阈值输出和高阶反斯托克斯光输出,其中平凸腔结构下高阶反斯托克斯光的阈值更低。The generation of anti-Stokes light based on KGd(WO_(4))_(2)(KGW)crystal under the condition of narrow interval pulse train synchronous pump is studied.Using KGW crystal as Raman crystal,pulsed picosecond laser as pump source,the wavelength is 1064 nm,and the pulse repetition rate is 1 kHz.Using flat-flat cavity,plano-convex cavity,and concave-convex cavity as synchronous Raman cavity,the thresholds of anti-Stokes light produced by the three kinds of cavity structures is studied,respectively.Experiments have proved that when the synchronous Raman cavity adopts a plano-convex cavity and a concave-convex cavity structure,it produces a low-threshold output and a high-order anti-Stokes light with a threshold lower than the second-order Stokes light.Light output,where the threshold of high-order anti-Stokes light under the plano-convex cavity structure is lower.

关 键 词：激光光学 皮秒同步泵浦拉曼激光器 受激拉曼散射效应 四波混频效应 反斯托克斯光 

分 类 号：O437[机械工程—光学工程]