| 1. | Some electro - optical crystals can result in birefringency when they are pressed by electric field , by controlling the intensity of the electric field , we can change the phase of the output optical beam , so the desired scanning direction can be got
它主要是利用某些电光晶体在电场的作用下，可以产生双折射的原理，通过控制加在光学相控阵中各相控单元两极间的电场强度，可以改变出射光的相位，从而得到所需角度的扫描。 |
