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本文研制了一种由向列型液晶和非晶硅光导层组成的新型光学相位共轭镜。概述了该器件产生相位共扼波的原理,通过实验测试了器件的性能。测试表明,该器件有灵敏度高(20μW/cm ̄2)、响应速度快(5ms)、光谱响应范围宽、结构紧凑等特点。由于响应快,器件能在没有防振装置的实验桌上输出相位共轭波,这对相位共轭的推广应用有重要意义。为了提高共轭光强,实验中还使用了一种脉冲增强技术,它将共轭光的功率提高了一个量级以上。
In this paper, we develop a novel optical phase conjugate mirror consisting of a nematic liquid crystal and an amorphous silicon photoconductive layer. The principle of phase congruency wave generated by the device is summarized. The performance of the device is experimentally tested. Tests show that the device has high sensitivity (20μW / cm ~ 2), fast response speed (5ms), the spectral response of a wide range of features such as compact. Due to the fast response, the device can output the phase conjugate wave at the experimental table without anti-vibration device, which is of great significance for the popularization and application of phase conjugation. In order to increase the conjugate light intensity, a pulse enhancement technique was also used in the experiment, which increased the power of conjugate light by more than one order of magnitude.