摘要
针对超高峰值功率激光系统中脉冲的压缩及聚焦过程进行建模,基于光线追迹法和夫琅禾费衍射方法对平行光栅对压缩器的色散过程和抛物面镜的聚焦过程进行了模拟分析,同时采用Square-Radial多项式对方形口径的波前畸变进行描述,分析了近场存在4种不同波前畸变情况时对远场时空分布的影响,定量给出了不同情况下波前畸变误差的允许范围。
In this study,we establish a theoretical model of pulse compression and focusing process in an ultrahigh peak power laser system and simulate the dispersion process of parallel grating pair compressor and the focusing process of parabolic mirror based on ray-tracing method and Fraunhofer far-field diffraction.The wavefront distortion for a square diameter is described using the Square-Radial polynomial.The effect of four different wavefront distortions in near-field on the far-field spatio-temporal distribution is analyzed,and the error tolerance is provided under different conditions.
作者
胡必龙
王逍
李伟
曾小明
母杰
左言磊
王晓东
吴朝辉
粟敬钦
Bilong Hu;Xiao Wang;Wei Li;Xiaoming Zeng;Jie Mu;Yanlei Zuo;Xiaodong Wang;Zhaohui Wu;Jingqin Su(Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang,Sichuan 621900,China;Science and Technology on Plasma Physics Laboratory,Mianyang,Sichuan 621900,China;Graduate School,China Academy of Engineering Physics,Beijing 100088,China)
出处
《光学学报》
EI
CAS
CSCD
北大核心
2020年第11期216-222,共7页
Acta Optica Sinica
基金
国家自然科学基金(11875240)
等离子体物理重点实验室基金(ZY2018-09)。
关键词
超快光学
脉冲压缩
超快激光
衍射光栅
波前畸变
时空特性
ultrafast optical
pulse compression
ultrafast lasers
diffraction gratings
wavefront distortion
spatio-temporal property
