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Proceedings Paper

Index gratings in low glass transition temperature polymer composites based on poly(N-vinylcarbazole)
Author(s): Qihuang Gong; Feng Wang; Bo Zhang; Pengqian Wang; Zhiming Feng; Cheng Ye
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Paper Abstract

Photorefractive film of low Tg 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.

Paper Details

Date Published: 19 May 2000
PDF: 5 pages
Proc. SPIE 3939, Organic Photonic Materials and Devices II, (19 May 2000); doi: 10.1117/12.386364
Show Author Affiliations
Qihuang Gong, Peking Univ. (China)
Feng Wang, Peking Univ. (China)
Bo Zhang, Peking Univ. (China)
Pengqian Wang, Institute of Chemistry (China)
Zhiming Feng, Institute of Chemistry (China)
Cheng Ye, Institute of Chemistry (China)


Published in SPIE Proceedings Vol. 3939:
Organic Photonic Materials and Devices II
Donal D. C. Bradley; Bernard Kippelen, Editor(s)

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