Another important application of diffraction theory is the study of the far field divergence Angle of a collimated light beam.
衍射理论的另一个重要应用就是研究准直光束的远场发散角。
The output parameters such as beam divergence angle in far-field output power of high power solid state lasers are variable due to thermal effect of optical pumping.
由于光泵浦热效应，高功率固体激光器的输出参数如光束远场发散角、输出功率等会发生变化。
The expression of complex amplitude is given in reference plane vertical to the optical axis by far-field approximation when the line source and the principal axis are at any Angle.
在柱坐标下从微分波动方程出发，推导柱面光波的场分布，并利用远场近似条件导出当线光源与光轴成任意角度时，在垂直光轴方向的参考面上的复振幅表示。
It is shown that the far-field behavior of diffracted partially polarized Gaussian Schell-model beams depends on the truncation parameter, spatial coherence parameters and diffraction Angle.
研究结果表明，光阑衍射部分偏振高斯·谢尔模型光束的远场特性与光阑截断参量、光的空间相干性和衍射角有关。
The relative errors of the beam width and far-field divergence angle introduced by the spherical aberration increase with increasing spherical aberration coefficient and decreasing beam order.
束宽和远场发散角的相对误差随球差系数绝对值的增加和光束阶数的减小而增加；
The relative errors of the beam width and far-field divergence angle introduced by the spherical aberration increase with increasing spherical aberration coefficient and decreasing beam order.
束宽和远场发散角的相对误差随球差系数绝对值的增加和光束阶数的减小而增加；
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