光学学报, 2010, 30 (9): 2624, 网络出版: 2014-05-15   

高效率中红外2.7 μm可调谐激光器

HighEfficiency 2.7 μm Tunable MidInfrared Laser
作者单位
中国工程物理研究院应用电子学研究所, 四川 绵阳 621900
摘要
报道了采用1064 nm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2.7 μm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1064 nm激光抽运功率为182 W,声光Q开关工作频率为10 kHz和PPMgO:CLN晶体工作温度为150 ℃条件下,获得了平均功率为36.7 W、波长为2.73 μm中红外激光输出,斜率效率为23.7%。通过改变周期为31.3 μm PPMgO\:CLN 晶体的工作温度30 ℃~200 ℃,获得了中红外波长3.0~2.6 μm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。
Abstract
Experimental results of a highefficiency 2.7 μm tunable laser are demonstrated on a quasiphasematched singly resonant optical parametric oscillator (OPO) in PPMgO\:CLN (5% MgOdoping) 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.
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彭跃峰, 魏星斌, 王卫民, 李德明. 高效率中红外2.7 μm可调谐激光器[J]. 光学学报, 2010, 30(9): 2624. 彭跃峰, 魏星斌, 王卫民, 李德明. HighEfficiency 2.7 μm Tunable MidInfrared Laser[J]. Acta Optica Sinica, 2010, 30(9): 2624.

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