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利用光线追迹法,对一种常用光栅展宽器的色散量进行了计算,数值分析了展宽器各组成部分的相对位置改变对二阶色散及产生像差的影响,为展宽器各元件的精确调节提供了依据.
The chromatic aberration of a conventional grating stretcher was calculated by ray tracing method. The influence of the relative position change of the stretcher on the second-order dispersion and aberration was analyzed numerically. Regulated provided the basis.