The formulas of mode conversion are derived and effects of optical beam power, initial beam width radius and inverse of the radius of curvature of the wave front on the mode conversion are analysed.

导出模式变换公式，分析了光束功率、光束初始的束宽半径和波前曲率半径的倒数对模式变换的影响。

youdao

The influence of wave-front-distorted pump pulse on the beam quality of the amplified signal pulse in the non-collinear optical parametric amplification(OPA) is numerically simulated.

数值模拟了拍瓦激光器前端非共线光参变放大（OPA）过程中存在波前畸变的抽运光对信号光光束质量的影响。

youdao

The results show that, for a Gaus-sion laser beam, the shock front is a curved surface, the pressures at different radial positions on the wave front are different.

计算表明，对于高斯激光束，冲击波阵面为一曲面，波阵面上不同径向位置的压强是不同的。

youdao