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首页> 外文期刊>_Applied Physics Express >Measurement of the threshold of nonfocusing-pumped stimulated Brillouin scattering based on temporal characteristic of the reflected pulse
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Measurement of the threshold of nonfocusing-pumped stimulated Brillouin scattering based on temporal characteristic of the reflected pulse

机译：基于反射脉冲的时间特性测量非聚焦泵激布里渊散射阈值

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摘要

We present a novel method for measuring the threshold of stimulated Brillouin scattering with large-aperture super-Gaussian-shaped laser pulses transmitting in a nonlinear medium. From the differences between the waveforms of reflected light below and above the SBS threshold and the "energy in the bucket" method, threshold pump intensity can be determined clearly. Experiment is carried out with a high-power Nd:glass laser system of 527 nm wavelength, used as the light source that delivers 3 ns super-Gaussian-shaped pulses, and the nonlinear medium FC-40. The experimental results agree well with the numerically calculated results, and the SBS threshold in this case is 780 MW/cm~2.
机译：我们提出了一种新颖的方法，用于通过非线性介质中传输的大孔径超高斯形激光脉冲来测量受激布里渊散射的阈值。根据SBS阈值以下和以上的反射光波形之间的差异以及“铲斗中的能量”方法，可以清楚地确定阈值泵浦强度。实验是使用波长为527 nm的高功率Nd：玻璃激光系统作为光源，该系统提供3 ns的超高斯形脉冲和非线性介质FC-40。实验结果与数值计算结果吻合良好，此时的SBS阈值为780 MW / cm〜2。

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  • 来源
    《_Applied Physics Express》 |2014年第12期|122601.1-122601.4|共4页
  • 作者

    Xuehua Zhu; Yulei Wang; Zhiwei Lu;

  • 作者单位

    National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, People's Republic of China;

    National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, People's Republic of China;

    National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, People's Republic of China;

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