Influence of recording angle on photorefractive properties in In:Fe:Cu:LiNbO₃ crystal at 488 nm wavelength

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• 作者：Suhua Luo ; ^{shual@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Qingxin Meng ; Jian Wang ; Xiudong Sun
• 关键词：Recording angle ; Change refractive index ; Response time ; Recording sensitivity ; In ; Fe ; Cu ; LiNbO3 crystal
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：127
• 期：5
• 页码：2761-2763
• 全文大小：281 K

文摘

Congruent LiNbO₃ crystal doped with Fe₂O₃, CuO and In₂O₃, respectively, were grown by Czochralski method. The blue photorefractive performance (the change refractive index Δn, response time τ_w and recording sensitivity S, at different recording angle) was investigated by using the typical two-wave coupling experimental setup. The results show that Δn reduces, τ_w first decreases then increase, S first increase then decreases with the recording angle increasing within our measurement range. It should be compromised between the change refractive index and the recording sensitivity when we using In:Fe:Cu:LiNbO₃ crystal to holographic storage. The compromising recording angle is near 50° in air under our experimental conditions. The experimental results also indicates that In:Fe:Cu:LiNbO₃ crystal becomes a promising candidate for blue photorefractive holographic recording materials.