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新的光折变晶体──掺铈钛酸钡在60年代,美国的贝尔实验室用铌酸钾晶体进行倍频实验时,首次观察到了光折变现象。光折变效应是指在光场的作用下,使材料中的折射率发生了可逆的变化。即当光折变材料被非均匀光照射时,来自能隙中能级上的载流子(电子、空穴,也可能是... 相似文献
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The influence of polarization variation of a pump beam on the performance of a “bridge” mutually pumped phase conjugator has been investigated. The reflectivity, transmission, and response time were measured for different polarizations and different intensity rations of input beams. From these measured results, the variation behaviors of parameters of fourwave mixing interactions in the crystal are revealed. 相似文献
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