| Original Articles |
|
|
|
|
All-Optical Photorefractive Effect in Carbazole-Based Azo-Side Group Polymer |
| HUANG Mao-Mao1;CHEN Zhi-Jian1;SHI Jun2;CAO Shao-Kui2;GONG Qi-Huang1 |
| 1School of Physics, State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871
2College of Materials Engineering, Zhengzhou University, Zhengzhou 450052 |
|
| Cite this article: |
|
HUANG Mao-Mao, CHEN Zhi-Jian, SHI Jun et al 2006 Chin. Phys. Lett. 23 2468-2471 |
|
|
|
Abstract We observe the photorefractivity without bias voltage or prepoling in a bifunctional photorefractive polymer. The maximum two-beam coupling gain is measured to be 126cm-1 at zero bias voltage. The sample is considered to be poled by the photoinduced longitudinal electric field, which is formed due to the light intensity gradient along the light path. The expression of the electric field was deduced. The energy transfer direction between two writing beams and light intensity dependence of the two-beam coupling gain coefficient is predicted to be consistent with the experimental results. Furthermore, the dependence of the two-beam coupling gain coefficient on external applied electrical field is measured and this experiment verifies the existence of the photoinduced longitudinal electric field.
|
| Keywords:
42.70.Ln
42.65.Hw
42.70.Jk
|
|
|
Published: 01 September 2006
|
|
| PACS: |
42.70.Ln
|
(Holographic recording materials; optical storage media)
|
| |
42.65.Hw
|
(Phase conjugation; photorefractive and Kerr effects)
|
| |
42.70.Jk
|
(Polymers and organics)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
