基于空谱干涉和远场的分步式短脉冲激光时间同步探测

Time Synchronization Step Detection for Short Pulses Using Spatial-Spectral Interference and Far Field

提出了一种基于空谱干涉和远场的分步式短脉冲激光同步探测方法,先利用空谱干涉捕捉时间同步的大范围,再利用远场实现同步的高精度探测。采用数值模拟对基于空谱干涉和远场的同步探测进行了分析,研究结果证明了该方法的可行性。该方法兼顾了大范围和高精度的特点,且对光强要求不高,能确保大部分能量用于物理实验研究,适用于短脉冲激光系统。同时,该方法可用于等离子体参数诊断、短脉冲激光相干合成等领域的时间同步的测量与控制。

In this study,a step-detection method for the time synchronization of short pulses,based on spatial-spectral interference and far field,is proposed.A large range of time synchronization is first captured using the spatial-spectral interference,and the high-precision detection of which is then realized using far field.The proposed method is then simulated and analyzed.Results show the feasibility of this proposed method,suggesting that it exhibits advantages such as a large range and high precision.Moreover,the low requirement of energy makes it suitable for a short-pulse laser system as most of the energy can be applied to physical experiments.Furthermore,it can be used for the measurement and control of the time synchronization in plasma parameter diagnosis,coherent beam combination,and other fields.