The filter is compact, does not change the direction of optical beam, and can be applied to frequency-doubled laser.
这种旋光滤波器体积较小，且不改变光的原传播方向，是一种适用于倍频激光的滤波器。
The filter is compact, does not change the direction of optical beam, and can be applied to frequency-doubled laser.
这种旋光滤波器体积较小，且不改变光的原传播方向，是一种适用于倍频激光的滤波器。
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