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首页> 外文期刊>Optics Letters >High-power, continuous-wave, optical parametric oscillator pumped by an optically pumped semiconductor laser at 532 nm
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High-power, continuous-wave, optical parametric oscillator pumped by an optically pumped semiconductor laser at 532 nm

机译：高功率连续波光学参量振荡器，由532 nm的光泵浦半导体激光器泵浦

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摘要

We report a high-power, cw, single-frequency optical parametric oscillator pumped external to an optically pumped semiconductor laser (OPSL). The singly resonant oscillator (SRO), based on a 30 mm crystal of MgO:sPPLT, is pumped by a 6 W, cw OPSL at 532 nm. By deploying signal outcoupling and loose focusing in the presence of low pump power, we achieve significant improvements in SRO performance across the tuning range with regard to signal power, extraction efficiency, and pump depletion by reducing thermal effects. We generate >1.78 W of idler and >0.9 W of signal over 856-1404 nm while maintaining a total output power of >2 W over 93percent of the tuning range at an extraction efficiency of 48.7percent and pump depletion of 84percent. The signal power remains within 0.85-1.05 W across the entire tuning range and has a TEM_(00) spatial profile with M~(2) < 1.28 and circularity of >97percent. Measurements of signal spectrum confirm single-frequency performance with an instantaneous linewidth of approx15 MHz and frequency stability better than 60 MHz over 60 s.
机译：我们报告了在光泵浦半导体激光器（OPSL）外部泵浦的大功率，连续波，单频光学参量振荡器。基于MgO：sPPLT的30毫米晶体的单谐振振荡器（SRO）由532 nm的6 W cw OPSL泵浦。通过在低泵浦功率的情况下部署信号输出耦合和松散聚焦，我们通过减小热效应，在整个调谐范围内，在信号功率，提取效率和泵浦损耗方面实现了SRO性能的显着改善。我们在856-1404 nm范围内产生> 1.78 W的惰轮和> 0.9 W的信号，同时在48.7％的抽取效率和84％的泵损耗下，在调谐范围的93％上保持> 2 W的总输出功率。在整个调谐范围内，信号功率保持在0.85-1.05 W之内，并且具有TEM_（00）空间分布，M〜（2）<1.28，圆度> 97％。信号频谱的测量证实了单频性能，瞬时线宽约为15 MHz，并且在60 s内的频率稳定性优于60 MHz。

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