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天然气便携硫化氢分析仪H2S-780
啁啾体布拉格光栅(简称:CBG)是一款具有频率选择和 色散 控制的被动晶体器件,它是通过在晶体内部沿光传播方向实现非等周期性的 折射 率调制,根据 布拉格条件 ,在不同位置处对应不同频率波长的激光,通过产生不同的 光程 差实现对色散的精确控制 ...
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