摘要
报道了一种基于周期性极化晶体PPMgLN、连续波、线性外腔结构、宽带可调谐单谐振光学参量振荡器。泵浦源采用LDA端面泵浦的Nd:YVO4连续波1.064μm激光器,并通过优化泵浦光与信号光的模式匹配,获得了低阈值、高效率的中红外激光输出。光参量振荡阈值仅为1.09W,是目前采用外腔结构所报道的最低值。在泵浦功率4.55W时,可以获得最大功率为346.8mW、波长为3.202μm激光输出,中红外光的光光转化效率达到了7.6%。并通过改变PPMgLN晶体的极化周期,可以实现中红外2.98～4.19μm宽带可调谐激光输出。此中红外激光器结构简单紧凑,可以室温运行。
We report a linear extra-cavity, tunable mid-infrared, Continuous Wave （CW） singly resonant Optical Parametric Oscillator （OPO） based on periodically poled MgO-doped LiNbO3 （PPMgLN）. A Nd：YVO4 laser pumped by 808 nm LDA is used as the pump source. The threshold of OPO system is only 1.09 W at 1 064 nm. A maximum idle laser output power of 346.8 mW at 3.202 μm has been achieved when the pump power is 4.55 W and it corresponds to an （only idler） optic-optic conversion efficiency of 7.6%. By shifting the PPMgLN crystal, the periods of the domain structure on the PPMgLN wafer can be changed, thus enabling a mid-infrared spectral widely tuning range of the laser output from 2.98？4.19 μm. This laser is very compact, simple and operated at room temperature.
出处
《光电工程》
CAS
CSCD
北大核心
2011年第7期31-35,共5页
Opto-Electronic Engineering
基金
厦门理工学院科学技术研究项目(YKJ1011R)“全固态单谐振光学参量振荡器的研究”
吉林省科技发展计划项目(200903053)“中红外波段全固态光学参量振荡器产品研究与开发”
