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Proceedings Paper

Light-controlled polarization switches in azobenzene-containing polymers
Author(s): Ivanka Mancheva; Elena Nacheva; Tsveta Petrova; Natalia Tomova; Violeta Dragostinova; Todor Todorov; Ludmila Nikolova
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Paper Abstract

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.

Paper Details

Date Published: 4 November 2003
PDF: 5 pages
Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); doi: 10.1117/12.519487
Show Author Affiliations
Ivanka Mancheva, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Elena Nacheva, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Tsveta Petrova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Natalia Tomova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Violeta Dragostinova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Todor Todorov, Central Lab. of Optical Storage and Processing of Information (Bulgaria)
Ludmila Nikolova, Central Lab. of Optical Storage and Processing of Information (Bulgaria)


Published in SPIE Proceedings Vol. 5226:
12th International School on Quantum Electronics: Laser Physics and Applications
Peter A. Atanasov; Alexander A. Serafetinides; Ivan N. Kolev, Editor(s)

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