基于脉冲复制的单脉冲激光对比度测量 |
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引用本文: | 袁索超,高立民,李东坚,赵娟宁.基于脉冲复制的单脉冲激光对比度测量[J].强激光与粒子束,2014,26(5):051016-89. |
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作者姓名: | 袁索超 高立民 李东坚 赵娟宁 |
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作者单位: | 1.中国科学院 西安光学精密机械研究所, 西安 71 01 1 9; |
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基金项目: | 激光参数测量组件研究与方案验证项目 |
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摘 要: | 为测量超短单脉冲激光的时间波形以及对比度信息,基于三阶强度相关原理,结合光脉冲复制技术,提出了基于脉冲复制的测量方法。对测量原理进行了详尽的理论分析。利用分步傅里叶和龙格库塔数值计算方法对测量方案做了模拟验证。基于脉冲复制的测量法能同时进行多窗口测量。通过拼接测量时间窗口,可以有效解决测量分辨率与测量时间窗口不能兼顾的问题,同时实现大时间窗口和高分辨率测量。通过将主脉冲与预脉冲分离到不同的测量窗口,避免了梯度衰减片的使用,且具有高对比度测量能力。
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关 键 词: | 单脉冲 对比度测量 三阶强度相关 脉冲复制 |
收稿时间: | 2013/7/10 |
Temporal contrast measurement of a single-shot laser pulse by optical pulse replication |
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Institution: | 1.Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China;2.University of Chinese Academy of Sciences,Beijing 100049,China |
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Abstract: | For the measurement of the time profile and the contrast information of the ultrashort laser pulse, based on the third-order intensity correlation principle, using optical pulse replication, a measurement method is proposed. Theoretical analysis is made about the measurement method. The simulation was done with split-step Fourier and Runge-Kutta methods. By measuring the pulse with pieces of windows and piecing the windows together, the measuring range can be enlarged. Thus a high resolution and large window measurement is achieved. The pre-pulse and main pulse are separated into different windows to avoid the use of gradient attenuator, and provides high-contrast measurement capability. |
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Keywords: | single-shot pulse contrast measurement third-order correlation pulse replication |
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