Wildly Tunable,High-Efficiency MgO:PPLN Mid-IR Optical Parametric Oscillator Pumped by a Yb-Fiber Laser |
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引用本文: | 刘善德,王兆伟,张百涛,何京良,侯佳,杨克建,王瑞华,刘训民.Wildly Tunable,High-Efficiency MgO:PPLN Mid-IR Optical Parametric Oscillator Pumped by a Yb-Fiber Laser[J].中国物理快报,2014(2):55-58. |
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作者姓名: | 刘善德 王兆伟 张百涛 何京良 侯佳 杨克建 王瑞华 刘训民 |
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基金项目: | Supported by the National Natural Science Foundation of China under Grant Nos 61275142, 51021062 and 91022003, and the National Major Scientific Equipment Developed Project of China under Grant No 2011YQ030127. |
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摘 要: | We demonstrate a wildly tunable, high-eFficiency mid-infrared (mid-IR) output-coupled single resonant optical parametric oscillator (OC-SRO) pumped by a Yb-fiber laser. The compact mid-infrared source employs a 50- mm-long, multi-grating MgO-doped periodically poled lithium niobate (MgO-PPLN) crystal, providing as much as 1.73 W idler power at 3.012#m, and 1.27W signal power at 1645nm, corresponding to an overall conversion efficiency of 41.7% and a slope efficiency of 77.9%. In particular, the mid-infrared output power of 1.03 W and 0.67W are obtained at 3.7μm and 3.9μm, respectively, with an optical-to-optical conversion efficiency of 14.3% and 9.3%. Furthermore, the idler light is tunable from 3 μm to 3.9 μm by changing the periods from 31 to 28.5μm, with the output power 〉1 W over 78% of the tuning range. Our experimental results are pump power limited and further mid-IR power and conversion efficiency could be obtained with a suitable high-power pump source. The total OC-SRO output power rms at 2.6 W is about 0.6% during 2 h measurement.
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关 键 词: | 中红外光参量振荡器 掺镱光纤激光器 泵浦光源 PPLN MgO 可调谐 周期性极化铌酸锂 光转换效率 |
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