Journal of Information Display
- Volume 2 Issue 3
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- Pages.6-12
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- 2001
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- 1598-0316(pISSN)
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- 2158-1606(eISSN)
Holographic Grating by Means of Polymer Liquid Crystals
- Ikeda, Tomiki (Chemical Resources Laboratory, Tokyo Institute of Technology) ;
- Yoneyama, Satoshi (Chemical Resources Laboratory, Tokyo Institute of Technology) ;
- Yamamoto, Takahiro (Chemical Resources Laboratory, Tokyo Institute of Technology) ;
- Hasegawa, Makoto (Chemical Resources Laboratory, Tokyo Institute of Technology)
- Published : 2001.09.30
Abstract
Formation of intensity gratings was studied with two s-polarized (s+s) configuration in polymer liquid crystals (PLCs) containing a photochromic moiety (azobenzene) and a mesogenic unit (tolane, T-AB; cyanobiphenyl, CB-AB) by photoinduced alignment of PLCs. Remarkable differences were observed between the two PLCs. T-AB showed a faster response to the change in the diffraction intensity than CB-AB. In T-AB, alignment change took place faster than that of CB-AB. By introducing the tolane unit at the side chain, we obtained a diffraction efficiency of 30 % in the Raman-Nath regime