低重复频率激光光束多参数实时监测系统

为了实现对数10 min一个脉冲，单脉冲能量5 J激光放大器多项输出参数的实时、高效率检测，设计了针对高能量、大截面和低重复频率激光系统输出的测量系统。该测量系统采用Fourier像传递技术，针对激光器的输出特性实现了对输出光束截面的清晰实时监测，并且能够同时检测光束的激光波长、光谱宽度、光斑尺寸、单脉冲能量、重复频率和偏振方向等数据。利用该统计系统能够计算光斑调制度、发散角、指向性、光束质量因子、能量稳定性、平均功率、功率稳定性、脉冲宽度、脉冲稳定性和偏振度等指标。

Abstract

To measure output parameters of a laser amplifier, with the repetition rate of several tens of minutes one pulse and single pulse energy of 5 J, a special designed measurement system is put forward for high-energy, large cross-section, low frequency laser system. This system uses the principle of Fourier image transfer to realize real-time and clear monitoring to the output characteristics of the laser beam. And this system can not noly detect laser wavelength, spectral width, spot size, single pulse energy, repetition rate, and polarization direction of the laser beam simultaneously, but also statistically calculate the beam modulation, divergence angle, directivity, beam quality factor, energy stability, average power, power stability, pulse width, pulse stability, and degree of polarization.

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赵天卓, 樊仲维, 余锦, 刘洋, 张雪, 闫莹, 麻云凤. 低重复频率激光光束多参数实时监测系统[J]. 中国激光, 2010, 37(12): 3086. Zhao Tianzhuo, Fan Zhongwei, Yu Jin, Liu Yang, Zhang Xue, Yan Ying, Ma Yunfeng. Multi-Parameters Real-Time Monitoring System for Low-Frequency Laser Beam[J]. Chinese Journal of Lasers, 2010, 37(12): 3086.

低重复频率激光光束多参数实时监测系统

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