In a LASER printer, a device that USES a modulator crystal to deflect a beam of light and effectively turn it on or off.
在激光印刷机中的一种装置，它利用一块调制晶体使光束偏转并将其接通或断开。
2
We experimentally produce this beam with a computer-generated hologram (CGH) displayed on a spatial light modulator (SLM).
利用计算全息方法和空间光调制器产生了环形平顶涡旋光束。
3
The key technology of measuring time-resolved spectrum is to design and make the special light beammodulator that is used to the time-resolved spectrum detecting.