拼接型光栅对压缩器中刻线密度差对输出脉冲的影响及补偿方案

发布时间：2018-12-27 14:19

【摘要】：拼接型光栅对压缩器中子光栅的刻线密度不一致会降低压缩器的品质,补偿刻线密度差的影响对于提高输出脉冲的性能具有十分重要的意义.基于光线追迹的方法建立了理论模型,数值分析了刻线密度差所导致的出射光角度偏移及输出脉冲展宽程度.提出同时用水平角偏误差和纵向错位误差来补偿光栅刻线密度差影响的方案,给出不同刻线密度差时的理论光栅偏转角度和对应的平移距离以及该方案的补偿范围.利用空谱干涉测量方法,验证了该方案在一定范围内可校正出射光的角度偏转,较好地补偿二、三阶色散误差,且实验与理论结果较为符合.本研究可为拼接光栅压缩器的设计与调整提供指导.
[Abstract]:The spliced grating will reduce the quality of the compressor and compensate for the effect of the difference in density for improving the performance of the output pulse. A theoretical model is established based on ray tracing method, and the exiting angle offset and output pulse broadening degree caused by the difference of line density are numerically analyzed. In this paper, a scheme of compensating the influence of grating line density difference with horizontal angle deviation error and longitudinal misalignment error is put forward. The theoretical grating deflection angle, the corresponding translation distance and the compensation range of the scheme are given. By using the space-spectrum interferometry method, it is verified that the scheme can correct the angular deflection of the emitted light in a certain range and compensate the second-and third-order dispersion errors well. The experimental results are in good agreement with the theoretical results. This study can provide guidance for the design and adjustment of splicing grating compressor.
【作者单位】：中国工程物理研究院激光聚变研究中心等离子体物理重点实验室;中国工程物理研究院研究生院;上海交通大学IFSA协同创新中心;
【基金】：国家自然科学基金(批准号:61308040,61505188) 国家高技术研究发展计划(批准号:2015AA8043047)资助的课题~~
【分类号】：TN25

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