TY - JOUR
T1 - Index gratings in low glass transition temperature polymer composites based on poly(N-vinylcarbazole)
AU - Gong, Qihuang
AU - Wang, Feng
AU - Zhang, Bo
AU - Wang, Peng
AU - Feng, Zhiming
AU - Ye, Cheng
PY - 2000
Y1 - 2000
N2 - Photorefractive film of low Tg polymer composites of poly(N-vinylcarbazole): N-(4-nitrophenyl)-(l)-prolinol: 2,4,7-trinitro-9-fluorenone: N-ethylcarbazol was fabricated at a weight ratio of PVK:NPP:TNF:ECZ = 35:50:1:15 wt.%. Two-beam-coupling (TBC) experiment and four-wave mixing experiment were performed at wavelength of 633 nm. A reversible photorefractive grating and an irreversible grating, were observed and distinguished. The TBC coefficient was measured to be 140 cm-1 at E0 = 85 V/μm, corresponding to a photorefractive grating of 3.6×10-3. The irreversible grating was measured to be about 7×10-3, which was attributed to the NPP aggregation.
AB - Photorefractive film of low Tg polymer composites of poly(N-vinylcarbazole): N-(4-nitrophenyl)-(l)-prolinol: 2,4,7-trinitro-9-fluorenone: N-ethylcarbazol was fabricated at a weight ratio of PVK:NPP:TNF:ECZ = 35:50:1:15 wt.%. Two-beam-coupling (TBC) experiment and four-wave mixing experiment were performed at wavelength of 633 nm. A reversible photorefractive grating and an irreversible grating, were observed and distinguished. The TBC coefficient was measured to be 140 cm-1 at E0 = 85 V/μm, corresponding to a photorefractive grating of 3.6×10-3. The irreversible grating was measured to be about 7×10-3, which was attributed to the NPP aggregation.
UR - https://www.scopus.com/pages/publications/0033722981
U2 - 10.1117/12.386364
DO - 10.1117/12.386364
M3 - Conference article
AN - SCOPUS:0033722981
SN - 0277-786X
VL - 3939
SP - 112
EP - 116
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
T2 - Organic Photonic Materials and Devices II
Y2 - 24 January 2000 through 26 January 2000
ER -