KNbO_3:Fe在632.8nm处的自泵相位共轭  

Self-pumped phase conjugation in KNbO3:Fe at 632.8nm

作　　者：王威礼[1] 王德煌[1] 张合义 郑英俊[1] 沈德忠 童小林 

机构地区：[1]北京大学物理系,100871 [2]北京人工晶体研究所,100018

出　　处：《中国激光》1992年第5期384-386,共3页Chinese Journal of Lasers

摘　　要：本文报道在He-Ne激光的632.8nm实现KNbO_3:Fe自泵相位共轭。虽然光折变材料的耦合系数随工作波长的增加而减少,但通过晶体材料的特殊切割,充分利用了最大电光系数:r_42=380pm/V和内表面的全反射,获得的自泵相位共轭反射率可达40％。In this paper we report for the first time the observation of self-pumped phase conjugation, in KNbO3:Fe at 632.8nm He-Ne laser wavelength. We note the coupling coefficient decreases with working wavelength in photorefractive materials. Our experiments were carried out with the crystal specially cut to bring the largest electro-optic coefficient r42 and total internal reflection on the inner surfaces. The reflectivity of 40% for self-pumped phase conjugation at 632.8 nm was obtained.

关 键 词：光折变 相位共轭 KNBO3 

分 类 号：TN245[电子电信—物理电子学]