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4 November 2003 Light-controlled polarization switches in azobenzene-containing polymers
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Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003)
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria
Three new side-chain cyan-azopolymers have been synthesized for the purposes of optical storage and processing of information. A very large birefringence (> 0.05) is induced in them on illumination with linearly polarized Ar laser beam (λ = 488 nm). It has been shown that the vaue of the photoinduced birefringence depends on the length of the side chains of the polymers. The effect has long memory time -- more than six months. We have used the self-induced rotation of the polarization ellipse in photobirefringent materials to induce chiral structures in the polymers. Total twist angles of the photoinduced spirals more than 90° have been achieved. The new polymers are suitable for the fabrication of light-controlled polarization switches.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ivanka Mancheva, Elena Nacheva, Tsveta Petrova, Natalia Tomova, Violeta Dragostinova, Todor Todorov, and Ludmila Nikolova "Light-controlled polarization switches in azobenzene-containing polymers", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003);

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