低频位相误差新校正方法模拟研究
Simulation on a new method of low-frequency phase aberration correction
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摘要: 就多程放大系统中产生的低频位相噪声，提出用位相补偿反射镜来进行补偿的静态校正方法。用随机位相屏模拟光学元件产生的低频位相噪声，建立光传输模拟模型，引入等效位相片的概念，将数个光学元件对位相的影响简化为等效位相片，在此基础上对位相补偿反射镜的校正原理进行阐述。进而对双程光路校正过程进行了模拟研究，得到了很好的校正效果。Abstract: A kind of new phase aberration correcting method is introduced—using a phase countervailing mirror to correct t he low-frequency phase error. This method is mainly aimed to correct the static phase aberration caused by the fishing error on the optics. With random phase screen simulating the low-frequency phase aberration of the amplifiers, and the other effect of amplifiers on the beam is neglected, a beam propagation is setup. A new concept of equivalent phase plate is introduced and the phase of the mirror, as the invert phase of the equivalent phase plate, is easy to get. Finally, simulation of the correcting course was done.
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