Index gratings in low glass transition temperature polymer composites based on poly(N-vinylcarbazole)

Qihuang Gong; Feng Wang; Bo Zhang; Pengqian Wang; Zhiming Feng; Cheng Ye

doi:10.1117/12.386364

19 May 2000 Index gratings in low glass transition temperature polymer composites based on poly(N-vinylcarbazole)

Qihuang Gong, Feng Wang, Bo Zhang, Pengqian Wang, Zhiming Feng, Cheng Ye

Proceedings Volume 3939, Organic Photonic Materials and Devices II; (2000) https://doi.org/10.1117/12.386364
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

Photorefractive film of low T_g polymer composites of poly(N-vinylcarbazole): -(4-nitrophenyl)-(1)-prolinol: 2,4,7-trinitro-9-fluorenone: N-ethylcarbazol was fabricated at a weight ratio of PVK:NPP:TNF:ECZ equals 35:50:1:15 wt percent. Two-beam-coupling (TBC) experiment and four-wave mixing experiment were performed at wavelength of 633nm. A reversible photorefractive grating and an irreversible grating, were observed and distinguished. The TBC coefficient was measured to be 140 cm^-1 at E₀ equals 85 V/micrometers , corresponding to a photorefractive grating of 3.6 X 10^-3. The irreversible grating was measured to be about 7 X 10^-3, which was attributed to the NPP aggregation.

Citation Download Citation

Qihuang Gong, Feng Wang, Bo Zhang, Pengqian Wang, Zhiming Feng, and Cheng Ye "Index gratings in low glass transition temperature polymer composites based on poly(N-vinylcarbazole)", Proc. SPIE 3939, Organic Photonic Materials and Devices II, (19 May 2000); https://doi.org/10.1117/12.386364

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