spatial pinhole filter 空间针孔滤波器
One way to improve beam quality is that the frequency having high nonlinear gain should be filtered by spatial filter pinhole.
改善的方法之一就是利用空间滤波器小孔将非线性增长很快的部分滤掉。
The focal spot, size depend on the pinhole diaphragm diameter of spatial filter.
光斑尺寸和空间滤波系统的针孔光阑直径有关。
The technique of using spatial pinhole filter for laser beam is introduced, and the experiment results are given.
介绍了空间针孔滤波器的调节方法，并给出了部分实验结果。
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