paraxial approximation

Research on Radially Polarized Gaussian Beam Beyond the Paraxial Approximation

对径向极化高斯光束超越近轴近似模型的研究

Based on the Rayleigh-Sommerfeld diffraction integral, the far-field expression for ultrashort pulsed Gaussian beams with constant waist width in a dispersive medium is derived without involving the paraxial approximation.

从瑞利-索末菲衍射积分公式出发，在不作近轴近似的前提下，得出了等束宽脉冲高斯光束在色散介质中的远场公式。

With the help of paraxial approximation, matrix theory and interference theory, the output laser beams of near field with two dimensions ASFC CO2 laser and three dimensions ASFC CO2 laser have been researched.

根据旁轴矩阵以及相干理论，分析了二维轴对称折迭组合腔二氧化碳激光器和三维轴对称折迭组合腔二氧化碳激光器的近场输出光束，并做了数值计算。

Gaussian beam method is based on the dynamic raytracing and paraxial approximation method.

高斯束方法是在动力学射线追踪和旁轴近似方法基础上发展而来的.

It is well known that there is apparent inconsistence or paradox in the conventional theory of laser optics due to the assumed paraxial approximation or assumption of slowly varying amplitude.

众所周知，传统激光光学理论，由于采用了傍轴近似或缓变振幅近似，存在明显的不自洽性和佯谬；