During the second recording, a phase plate is used to produce a half wave delay of the reference image.
在第二次的记录过程中，利用位相板使参考图像产生半波位相延迟。
Changes in fundamental and higher order Gaussian beams propagating through a phase plate have been studied numerically in detail.
对基模和高阶高斯光束通过位相板后的变化作了详细的计算分析。
According to the requirement of beam smoothing in laser systems, the continuous phase plate with Gaussian distribution is designed.
针对激光系统对光束匀滑的需求，设计了高斯型连续相位板，并对其远场特性进行了研究。
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