基于PPMgOLN晶体的高效紧凑型的腔内倍频固体TEM_(00)绿光激光器  

Compact and High-Efficient Intracavity Frequency Doubling Solid-State TEM_(00) Green Lasers by PPMgOLN Crystal

作　　者：费穷 邹小林[1] 周煌[1] 陈怀熹[1] 缪龙[1] 冯新凯[1] 宋国才[1] 廖小平[2] 梁万国[1] 

机构地区：[1]中国科学院福建物质结构研究所,福建福州350002 [2]四川文理学院计算机学院,四川达州635000

出　　处：《应用激光》2014年第6期598-601,共4页Applied Laser

基　　金：福建省科技重大专项专题资助项目(项目编号:2012HZ002)

摘　　要：研究了一种基于掺氧化镁周期极化铌酸锂(PPMgOLN)晶体的高效紧凑型的腔内倍频全固态TEM00绿光激光器。倍频晶体选用极化周期为6.96μm的1mm长的PPMgOLN晶体,该极化周期对应的准相位匹配(QPM)温度为26℃,腔内倍频温度带宽(FWHM)为15℃;通过单个温度控制器来控制808nm半导体激光器、激光晶体Nd∶YVO4、和非线性晶体PPMgOLN的工作温度在26℃;在泵浦功率3.6 W的情况下,产生1.84 W的连续TEM00绿光输出,光-光转换效率达到51%,1h内的输出功率波动小于1%。A compact and high-efficient intracavity frequency doubling solid-state TEM00 green lasers is studied based on periodically poled MgO：LiNbO3（PPMgOLN）. A 1mm long PPMgOLN crystal poled with a single period of 6.96 μm is chosen as SHG crystal,the quasi-phase-matched（QPM）temperature is 26 ℃,and the temperature bandwidth （FWHM） for 1mm PPMgOLN crystal as frequency doubling is 15 ℃. The temperature of 808nm semiconductor laser,the laser crystal Nd：YVO4 and the nonlinear crystal PPMgOLN is controlled at 26 ℃ by use a single temperature controller. 1.84 W cw TEM00 radiation of 532 nm green laser is generated with pump power of 3.6 W. The laser has good beam spatial profile. The maximum optical-to-optical efficiency has achieved to 51%. The fluctuation of output power is within 1% in 1 hour.

关 键 词：PPMgOLN 腔内倍频 绿光激光器 

分 类 号：TN248.4[电子电信—物理电子学]