摘要
The photorefractive effect was observed in poly(N-vinylcarbazole)composite films doped with electro-optic chromophore 2,5-dimetly-4(p-nitrophenylazo)anisole,plasticizer N-ethylcarbazole and different content fullerene C60.Their two-beam coupling experiment was performed by using a cw He-Ne laser at 632.8nm.The two-beam-coupling gain coefficient as higher as 140cm^(-1) was measured at poling dc electric field of 76V/μm and it was also found to be relied on the content of photosensitizer C60.
基金
Supported by the National Natural Science Foundation of China under Grant 19525412
National Education Commission,and National Science and Technology Commission of China.
