Based on the matrix optics, the propagation and transformation characteristics of Gaussian beam through a parabolic gradient-index rod with the spherical end surfaces are analyzed.
本文采用矩阵光学的方法，分析了高斯光束经球端面抛物型梯度折射率棒透镜的传播与变换特性。
2
The transformation formulae of Gaussian beams through a nonlinear parabolic graded index rod lens are derived.
本文导出了高斯光束通过非线性抛物形梯度折射率棒透镜的变换公式。
3
In the paper, the three-dimensional standard parabolic equation(SPE) and near-to-far-field transformation are deduced, and the radar cross section(RCS) of a perfectly conducting sphere is calculated.