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首页> 外文期刊>Optics Letters >Tunable synchronously-pumped fiber Raman laser in the visible and near-infrared exploiting MOPA-generated rectangular pump pulses
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Tunable synchronously-pumped fiber Raman laser in the visible and near-infrared exploiting MOPA-generated rectangular pump pulses

机译：利用MOPA产生的矩形泵浦脉冲，在可见光和近红外中可调谐同步泵浦拉曼激光

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摘要

We report a tunable synchronously pumped fiber Raman laser (SPFRL) in the near-infrared (NIR) and visible wavebands pumped by a pulsed, all-fiber PM 1060nm master oscillator power amplifier (MOPA) and its frequency-doubled output, respectively. The seed was adaptively shaped to deliver rectangular output pulses, thereby enabling selective excitation of individual Raman Stokes lines. Using filtered synchronous feedback of the desired Raman Stokes line, the linewidth of the SPFRL was reduced by a factor of 4 and the extinction ratio of the desired Raman Stokes was improved by more than 3 dB relative to a simple single-pass conversion scheme. A continuous tuning range of 2.2 THz was obtained for each of the Raman Stokes orders in the visible (spanning from green to orange--first to fifth Stokes lines). A larger 5.0 THz tunable range was achieved in the NIR spectral region.
机译：我们报告了由脉冲式全光纤PM 1060nm主振荡器功率放大器（MOPA）泵浦的近红外（NIR）和可见光波段中的可调同步泵浦光纤拉曼激光器（SPFRL）及其倍频输出。种子的形状经过自适应调整以传递矩形输出脉冲，从而能够选择性激发单个拉曼斯托克斯线。使用所需拉曼斯托克斯线的滤波同步反馈，SPFRL的线宽减小了4倍，并且相对于简单的单通转换方案，所需拉曼斯托克斯的消光比提高了3 dB以上。对于每个拉曼斯托克斯阶数，在可见光范围内获得了2.2 THz的连续调谐范围（从绿色到橙色-从第一到第五个Stokes线）。在NIR光谱区域中实现了较大的5.0 THz可调范围。

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