Reversible and irreversible index gratings in a NPP-doped low-Tg polymer composite

被引：0
|
作者：
Wang, F [1 ]
Zhang, B
Gong, QH
Wang, P
Feng, ZM
Ye, C
机构：
[1] Peking Univ, Dept Phys, Natl Lab Mesoscop Phys, Beijing 100871, Peoples R China
[2] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
来源：
JOURNAL OF MODERN OPTICS | 2001年 / 48卷 / 01期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1080/09500340150202766
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A reversible photorefractive grating and an irreversible local photo-induced aggregation grating were observed in a low glass transition temperature polymer composite poly( N-vinylcarbazole): 2,4, 7-trinitro-9-fluroenone: N-ethylcarbazol: N-(4-nitrophenyl)-(1)-prolinol. Two gratings were distinguished by using the two-beam coupling (TBC) experiment and the four-wave mixing experiment. For photorefractive grating, the TBC coefficient was measured to be 140 cm (1) at an applied electric field of E-0 = 85V/mum, corresponding to a photorefractive grating of 3.6 x 10(3). The photo-induced aggregation grating was measured to be about 7 x 10(3).
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页码：47 / 53
页数：7
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