光学学报, 2005, 25 (7): 999, 网络出版: 2006-05-22
新型聚偶氮苯取向增强光折变效应及全息存储
Orientation-Enhanced Photorefractive Effect and Holographic Storage in Novel Azobenzene Doped Polymer Films
薄膜光学 非共振吸收 取向增强光折变 折射率光栅 光全息存储 films optics nonresonant absorption orientation-enhanced photorefractive refractive index grating optical holographic storage
摘要
合成了新型偶氮分子偶氮二苯胺ADPA (Azo-diphenylamine),将其掺入聚乙烯咔唑Poly (N-Vinylcarbazole)(PVK)和聚丙烯丁酯(Poly-butylacrylate)(PBA)的聚合物(PVK-PBA)以及三硝基芴酮2,4,7-trinitro-9-fluorenone(TNF)聚合制成薄膜器件。结果表明掺杂偶氮苯聚合物薄膜在非共振吸收下具有强的光致取向增强光折变效应。光致折射率变化值Δn达到1.3×10-3以上。样品在两相干光束作用下, 可建立光折射率光栅,其衍射效率可超过30%,实现了光全息存储。讨论了影响折射率光栅的因素,并对全息存储相关结果形成的机制进行了分析。
Abstract
A novel type of azobenzene molecule (Azo-diphenylamine) (ADPA) doped in poly (N-vinylcarbazole) (PVK), Poly-butylacrylate (PBA) and 2,4,7-trinitro-9-fluorenone (TNF) was synthesized and studied. The experimental results showed that the polymer film possesses strong photo-induced orientation-enhanced photorefractive effect. The change value of photo-induced refractive index Δn surpasses 1.3×10-3. When irradiated by two-beams, the sample can set up refractive index grating with the diffraction efficiency over 30%. The optical holographic storage was achieved. The factors that influenced refractive index were discussed and the analysis to optical holographic storage was given.
谢茹胜, 赵有源, 李潞瑛, 郑元庆. 新型聚偶氮苯取向增强光折变效应及全息存储[J]. 光学学报, 2005, 25(7): 999. 谢茹胜, 赵有源, 李潞瑛, 郑元庆. Orientation-Enhanced Photorefractive Effect and Holographic Storage in Novel Azobenzene Doped Polymer Films[J]. Acta Optica Sinica, 2005, 25(7): 999.
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