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光学全息显示法
【出 处】
：
激光与光电子学进展
【发表日期】
：
1990年27期
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基于Kogelnik耦合波原理和矩阵光学，讨论了调节双层体光栅的穿插层厚度产生飞秒激光双脉冲的方法。推导了飞秒脉冲读出双层体光栅后的衍射场表达式，数值模拟了瞬时衍射光强分布随穿插层厚度变化的关系曲线。数值模拟结果表明当穿插层厚度在4~11 mm区间变化时，衍射脉冲变成双脉冲，且双脉冲间隔与穿插层厚度成正比，利用衍射理论及衍射场表达式对其进行了解释。利用周期性介质群时延讨论了衍射脉冲时延随穿插层厚度的变化，发现脉冲间隔随穿插层厚度变化的斜率是脉冲时延随穿插层厚度变化斜率的绝对值的2倍。
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