激光与光电子学进展, 2012, 49 (6): 061403, 网络出版: 2012-05-02
近红外掺镁周期极化铌酸锂光参变振荡器
Near infrared Optical Parametric Oscillator Based on Periodically Poled MgO:LiNbO3
激光技术 非线性光学 温度调谐 光参变振荡器 掺镁周期性极化铌酸锂 laser technique nonlinear optics temperature tuning optical parametric oscillator periodically poled MgO:LiNbO3
摘要
研究了掺镁周期性极化铌酸锂光参变振荡器(PPMgLN-OPO)在近红外波段的调谐特性和输出特性。计算了PPMgLN-OPO的调谐曲线，并采用Nd:YVO4激光器产生的1.064 μm激光作为抽运源，验证了其温度调谐特性，实现了1.8~2.6 μm的可调谐红外激光输出。此外，比较了长度为2 cm和3 cm的PPMgLN晶体的OPO输出特性，并在抽运功率为6.7 W时，获得了最高功率为3.2 W的2 μm激光输出，转换效率达47.8%。
Abstract
Theoretical and experimental study is presented on near infrared band tuning and output characteristics of optical parametric oscillator based on periodically poled MgO:LiNbO3 (PPMgLN-OPO). The temperature tuning curve of PPMgLN is calculated. Through OPO experiments based on PPMgLN pumped by a 1.064 μm Nd:YVO4 laser, we realize tunable infrared laser output of 1.8~2.6 μm. We also compare the output characteristics of length of 2 cm and 3 cm PPMgLN crystals. When the pump power is 6.7 W, up to 3.2 W laser output in the 2 μm band is generated with a conversion efficiency of 47.8%.
吴羽, 焦中兴, 何广源. 近红外掺镁周期极化铌酸锂光参变振荡器[J]. 激光与光电子学进展, 2012, 49(6): 061403. Wu Yu, Jiao Zhongxing, He Guangyuan. Near infrared Optical Parametric Oscillator Based on Periodically Poled MgO:LiNbO3[J]. Laser & Optoelectronics Progress, 2012, 49(6): 061403.
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