高效率中红外2.7μm可调谐激光器  

High-Efficiency 2.7μm Tunable Mid-Infrared Laser

作　　者：彭跃峰[1] 魏星斌[1] 王卫民[1] 李德明[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《光学学报》2010年第9期2624-2628,共5页Acta Optica Sinica

摘　　要：报道了采用1064nm激光抽运周期极化掺杂氧化镁的铌酸锂(PPMgO…CLN)晶体光参变振荡器(OPO)实现高效率2.7μm可调谐激光输出的实验结果,理论计算了PPMgO…CLN晶体准相位匹配(QPM)温度调谐曲线。在1064nm激光抽运功率为182W,声光Q开关工作频率为10kHz和PPMgO:CLN晶体工作温度为150℃条件下,获得了平均功率为36.7W、波长为2.73μm中红外激光输出,斜率效率为23.7%。通过改变周期为31.3μmPPMgO…CLN晶体的工作温度30℃～200℃,获得了中红外波长3.0～2.6μm激光输出,波长温度调谐实验结果与理论分析结果有大约10℃的差异。Experimental results of a high-efficiency 2.7 μm tunable laser are demonstrated on a quasi-phase-matched singly resonant optical parametric oscillator （OPO） in PPMgO：CLN （5% MgO-doping） crystal pumped by a 1064 nm laser. Theoretical analysis of the PPMgO：CLN temperature tuning is presented. When the crystal is operated at 150 ℃ and the pump power is 182 W with a repetition rate of 10 kHz,an average output power of 36.7 W at 2.73 μm is obtained with a slope efficiency of 23.7%. The wavelength tunability of 3.0~2.6 μm can be achieved by adjusting the temperature of a 31.3 μm period PPMgO：CLN crystal from 30 ℃ to 200 ℃. Compared with the results of theoretical analysis,the discrepancy of about 10 ℃ is found in experiment.

关 键 词：激光器 可调谐激光器 光参变振荡器 周期极化掺杂氧化镁的铌酸锂晶体 准相位匹配 

分 类 号：TN248.1[电子电信—物理电子学]