The amplifier input is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.
放大器输入为电压信号，与光敏二极管产生的光电流信号成比例。调制光柱以断路器同样的频率照射光敏二极管。
DEMODULATION, The process of retrieving information (modulation) voltage from a modulated carrier voltage.
解调，从载波电压中获得调制电压的处理过程。
The "half-wave voltage" usually was used to assess the modulated property of different eleetrooptic crystals.
调制晶体的性能好环，通常是由半波电压和消光比这二个量来表征的。
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