摘要
采用一种二维弱可压缩性的轴对称的涡模型,研究单个涡和光波阵面的相互干扰.对于低能量激光,在近场采用几何光学的分析方法.计算受干扰波阵面的光程差以及抖动角,确定通过涡的低密度区后会加速波阵面的变形,单体涡对光束有散焦作用.计算化学氧碘激光(COIL)通过涡之后的斯特列尔比,证明涡强对斯特列尔比有重要的影响.
A weakly-compressible two-dimensional axisymmetric isentropic vortex model is employed to stimulate interactions between single vortex and single optical wavefront. For near-field aero-optics at low beam energies geometrical optics is adopted. Optical-path-difference of propagated distorted wavefront is computed. It is confirmed that transform of beam wavefront is accelerated as beam passing through the vortex with low density. Single vortex defocuses the beam. Computation on COIL indicates that strength of vortex has strong effect on Strehl rate.
出处
《计算物理》
EI
CSCD
北大核心
2008年第5期602-606,共5页
Chinese Journal of Computational Physics
基金
国家自然科学基金(10402043)资助项目
关键词
涡
几何光学
光波阵面
化学氧碘激光
vortex
geometrical optics
optical wavefront
chemical oxygen iodine laser （COIL）
