1996•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
Improvement of the holographic response time in photorefractive double-doping KNbO3
Yi Ding, Zhiguo Zhang, Hans Joachim Eichler, Aimin Yin, Panming Fu, GuoWei Zhou, Jixiang Tang, D. Z. Shen, X. Y. Ma, J. Y. Chen
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Abstract
We report our experimental studies on the photorefractive response of KNbO3 double doped with manganese and rubidium. Two-beam coupling response time of photorefractive potassium niobate crystals is 3 to 10 times improved by double doping manganese and rubidium, when compared with that of the KNbO3:Mn crystals, which have shown a strong photorefraction. The photorefractive two-beam coupling gain coefficient in such crystals remains almost the same as those in KNbO3:Mn, which is 3 times higher than that of KNbO3 doped with rubidium alone, which has a fast response time.