应用激光, 2014, 34 (6): 598, 网络出版: 2015-01-13
基于PPMgOLN晶体的高效紧凑型的腔内倍频固体TEM00绿光激光器
Compact and High-Efficient Intracavity Frequency Doubling Solid-State TEM00 Green Lasers by PPMgOLN Crystal
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6.96 μm的1 mm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808 nm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%,1 h内的输出功率波动小于1%。
Abstract
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.
费穷, 邹小林, 周煌, 陈怀熹, 缪龙, 冯新凯, 宋国才, 廖小平, 梁万国. 基于PPMgOLN晶体的高效紧凑型的腔内倍频固体TEM00绿光激光器[J]. 应用激光, 2014, 34(6): 598. Fei Qiong, Zou Xiaolin, Zhou Huang, Chen Huaixi, Miao Long, Feng Xinkai, Song Guocai, Liao Xiaoping, Liang Wanguo. Compact and High-Efficient Intracavity Frequency Doubling Solid-State TEM00 Green Lasers by PPMgOLN Crystal[J]. APPLIED LASER, 2014, 34(6): 598.
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