| Widely continuous-tunable 2.789-4.957 μm twin- MgO：PPLN cascaded optical parametric oscillator |
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| 作者姓名： | 夏林中 苏红 阮双琛 |
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| 作者单位： | Linzhong Xia(College of Optoelectronic Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Shenzhen Key Laboratory of Laser Engineering,Shenzhen University,Shenzhen 518060,China);Hong Su,Shuangchen Ruan(Shenzhen Key Laboratory of Laser Engineering,Shenzhen University,Shenzhen 518060,China) |
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| 基金项目： | supported by the Scientific Research Starting Foundation for Returned Overseas Chinese Scholars Ministry of Education,China |
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| 摘 要： | An all-solid-state mid-infrared optical parametric oscillator with wide tunability by using two identical multi-grating periodically poled 5-mol.-% MgO-doped lithium niobate cascaded is reported. The pump laser is an acousto-optically Q-switched Nd：YAG laser with 150-ns pulse width at repetition rate of 10 kHz. Wide tunability from 2.789 to 4.957μm at the idler wavelength is achieved by varying the temperature from 40 to 200 ~C and translating the grating periods from 26 to 31 μm with a step of 0.5μm. When the incident pump average power is 8.15 W, the maximum idler output average power is 2.23 W at 3.344 μm and the optic-optic conversion efficiency is about 27.4%.
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| 关 键 词： | 光参量振荡器 连续可调 氧化镁 PPLN 微米 级联 Nd：YAG 泵浦光源 |
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