Photorefractive properties of Cu-doped (K0.5Na0.5)0.2(Sr0.75Ba 0.25)0.9Nb2O6 crystals with different doping levels and different dimensions

Xiaonong Shen, Jianhua Zhao, Xinliang Lu, Quanzhong Jiang, Jingwen Zhang, Hairui Xia, Lihuan Song, Shujun Zhang, Jianru Han, Huanchu Chen

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Abstract

In this article, we studied the photorefractive properties of Cu-doped (K0.5Na0.5)0.2 (Sr0.75Ba0.25)0.9Nb2O6 (Cu:KNSBN) crystals with different doping levels. The properties include two-wave mixing and self-pumped phase conjugation, absorption properties, and the growth conditions as well. We also studied the effect of the dimensions on the photorefractive properties. The mechanism of Cu-doped KNSBN and the influence of the different sites occupied by Cu+ on photorefractive properties are also discussed. All the experimental results showed that doping levels have much effect on the photorefractive properties. The crystal with a higher doping level has a higher effective charge carrier density, a larger coupling coefficient, and a faster response rate, which is suitable for fast optical information processing. Dimension has much influence on the photorefractive properties. The thinner crystal with the same doping level has a larger coupling gain coefficient, and a shorter response time.

Original languageEnglish (US)
Pages (from-to)3371-3376
Number of pages6
JournalJournal of Applied Physics
Volume86
Issue number6
DOIs
StatePublished - Sep 1999

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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