两束强度相等的相干光小角度在乙基橙-聚乙烯醇(EO/PVA)膜中耦合时,产生自衍射现象.对自衍射效率的动态特性进行了实验研究,实验表明:1)当入射光强较小(I为100 mW/cm2)时,一阶衍射效率η随照射时间的延长从零上升至一稳定值; 2)入射光强较大(I为480 mW/cm2)时,一阶衍射效率η从零开始迅速上升到一最大值ηm后再降至一稳定值ηs.以耦合光在膜中的干涉光场对trans-cis态的分子数分布进行调制而形成的粒子数光栅为模型,对衍射效率的动态特性进行了理论分析,理论与实验结果相符合.
参考文献
| [1] | Durbin S D,Arakelian S M,et al.Strong optical diffraction in a nematic liquid crystal with high nonlinearity[J].Opt.Lett.,1982,7(4):145-147. |
| [2] | Webb D J,Eston S J,Solymar L.Observations of diffraction and self-diffraction effects during two-wave mixing in a nematic liquid crystal[J].Opt.Commun.,1992,89(2-4):283-288. |
| [3] | Scott M L,Elson J M.Multilayer light scattering and the laser gyro[J].Appl.Phys.Lett.,1980,32(3):158-161. |
| [4] | Sanchez F,Kayoun P R,Huihnard J P.Two-wave mixing with gain in liquid crystals at 10.6μm wavelength[J].J.Appl.Phys.,1988,64:26-31. |
| [5] | Etbschole D R,Solymar L,Takacs J,et al.Higher diffracted orders in a BSO crystal:an experimental study of transients[J].Appl.Phys.B,1989,49(5):431-433. |
| [6] | Eichler H J,Glotz M,Kummrow A,et al.Picosecond pulse amplification by coherent wave mixing in silicon[J].Phys.Rev.A,1987,35(11):4673-4678. |
| [7] | Kumar G R,Singh B P,Sharma K K.Continuous-wave self-diffraction in dye-doped glasses[J].J.Opt.Soc.Am.B,1991,8(10):2119-2127. |
| [8] | Zhang Chunping,Chen Guiying,Song Q Wang,et al.Analysis of higher-order self-diffraction of low-power continuous wave based on nonlinear transmission of bR film[J].J.Modern Opt.,2004,51(2):285-296. |
| [9] | Guo Zongxia,Chen Guiying,Zhang Chunping,et al.Dynamic behaviour of self-diffraction in bacteriorhodop-sin film[J].Chin.Phys.Lett.,2004,21(12):2418-2421. |
| [10] | Chen Guiying,Zhang Cunping,et al.Time-dependent all-optical logic gates based on two coupled waves in bacteriorhodopsin film[J].Journal of Applied Physics,2005,98(4):044504-044504-5. |
| [11] | Chen Guiying,Zhang Chunping,et al.Real-time intensity-dependent all-optical switch of reverse image converter from wavelength to wavelength based on bacteriorhodopsin film[J].Opt.Commun.,2005,249(4-6):563-568. |
| [12] | Wang Pei,Ming Hai,Liang Zhongcheng,et al.Photoinduced birefringence and optical storage in azobenzene side-chain polyner liquid crystal film[J].Chinese Journal of Quantum Electronics(量子电子学报),2002,19(4):358-362 (in Chinese). |
| [13] | Fei Haosheng,Wei Zhenqian,Wu Pengfei,et al.Biphoton holographic storage in methyl orange and ethyl orange dyes[J].Opt.Lett.,1994,19(6):411-413. |
| [14] | Wang Pei,Ming Hai,Zhang Jiangying,et al.Study on long-time optical storage based on photoinduced birefringence in azobenzene side-chain liquid crystal polymer film[J].Chinese Journal of Quantum Electronics(量子电子学报),2003,20(1):104-108(in Chinese). |
| [15] | Todarov T,Nikolava L,Tomova N.Polarization holography 1:A new high efficiency organic material with reversible photoinduced birefringence[J].Appl.Opt.,1984,23(12):4309-4312. |
| [16] | Dos Santos Jr D S,Mendonca C R,Balogh D T,et al.Chromophore aggregation hampers photoisomerization in Langmuir Blodgett films of stearoyl ester of disperse red-13[J].Chem.Phys.Lett.,2000,317(1):1-5. |
| [17] | Tawa K,Kamada K,Sakaguchi T,et al.Local environment dependence of photoinduced anisotropy observed in azo-dye-doped polymer films[J].Polymer,2000,41(17):3235-3242. |
| [18] | Enns R H,Rangnekar S S.Diffraction by a laser induced thermal phase grating[J].Canadian Journal of Physics,1974,52:99-109. |
| [19] | Yavrian A,Asatryan K,Galstian T,et al.Real-time holographic image restoration in azo dye doped polymer films[J].Opt.Commun.,2005,251(4-6):286-291. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%