Photoinduced macroscopic chiral structures in a series of azobenzene copolyesters |
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| Authors: | L Nedelchev L Nikolova A Matharu PS Ramanujam |
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| Institution: | (1) Optilink A/S, Frederiksborgvej 399, DK-4000 Roskilde, Denmark, DK;(2) Central Laboratory of Optical Storage and Processing of Information, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria, BG;(3) Optics and Fluid Dynamics Department, Riso National Laboratory, DK-4000 Roskilde, Denmark, DK |
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| Abstract: | A study of the propagation of elliptically polarized light and the resulting formation of macroscopic chiral structures in
a series of azobenzene side-chain copolyesters, in which the morphology is varied from liquid crystalline to amorphous, is
reported. Real-time measurements are presented, showing the dynamic behavior of the photoinduced rotation of the polarization
ellipse in the different samples. The relationship between the ellipticity of the recording light and the linear birefringence
induced is studied. A numerical solution that takes into account the influence of the photoinduced linear dichroism on the
light propagation through the samples is presented.
Received: 10 June 2002 / Revised version: 26 July 2002 / Published online: 15 November 2002
RID="*"
ID="*"Corresponding author. Fax: +45-4677/4588, E-mail: lian.nedelchev@risoe.dk
RID="**"
ID="**"Permanent address: Department of Chemistry and Physics, The Nottingham Trent Unversity, Clifton Lane, Nottingham NG11 8NS,
England |
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| Keywords: | PACS: 42 25 Lc 42 70 -a 78 20 -e |
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