用大频差激光器测距的原理是什么呀

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请问什么样的工厂会是激光器的客户？谢谢

请教一下，声光Q驱动电源中的中心频率和驻波是什么概念啊 ？谢谢！

如题 谢了~~~ :em25:

Instrument Specifications Signal Ranges Up to 8 decades (dependent on detector type) Display Type 4.5 digit, annunciated, backlit, wide-angle view LCD Display Update Rate (ms) 75 Auto-Ranging Time 200 ms (typical) GPIB Bus Transfer Time 10 ms (typical) Analog Output 0–2V into 1 MW DC Accuracy ...

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就是那中激光打上去发出荧光的东东啊？我急用。救命啊！！！！！！

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