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Proceedings Paper

Stable polymer chromophore systems for nonlinear optics
Author(s): Sigurd K. Schrader; Karl Pfeiffer; Freimut Reuther; Hans-Joachim Lorkowski
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Paper Abstract

Stable polymer chromophor systems for electro-optical or other nonlinear optical applications can be obtained from dye-containing polyallylic ester polymers by corona poling combined with a simultaneous, thermal or photochemical crosslinking process. Molecular dynamic properties of these materials were observed by thermally stimulated discharge current measurements in order to estimate long-term stability of the orientational state reached after poling and cross-linking. Near glass transition several relaxation processes of the material were detected which influence the over-all relaxation time of the chromophores. The number, temperature position and relaxation strength of the different processes depend on the chemical constitution of the investigated allylic ester polymers. For certain polymers a solid state transformation was observed which can be attributed to a cyclic isomerization reaction. After poling and cross-linking at temperatures between 140 degrees Celsius and 180 degrees Celsius the investigated materials show stable orientation for years below 80 degrees Celsius. This can be concluded from isothermal and thermally stimulated relaxation experiments. In addition, these polymers are excellent film forming materials so that low- loss waveguide structures can be made from these materials either by photolithographic techniques or by molding.

Paper Details

Date Published: 6 February 1997
PDF: 6 pages
Proc. SPIE 2968, Optical Organic and Semiconductor Inorganic Materials, (6 February 1997); doi: 10.1117/12.266808
Show Author Affiliations
Sigurd K. Schrader, Institut fuer Angewandte Chemie Berlin-Adlershof eV (Germany)
Karl Pfeiffer, Institut fuer Angewandte Chemie Berlin-Adlershof eV (Germany)
Freimut Reuther, Institut fuer Angewandte Chemie Berlin-Adlershof eV (Germany)
Hans-Joachim Lorkowski, Institut fuer Angewandte Chemie Berlin-Adlershof eV (Germany)

Published in SPIE Proceedings Vol. 2968:
Optical Organic and Semiconductor Inorganic Materials
Edgar A. Silinsh; Arthur Medvids; Andrejs R. Lusis; Andris O. Ozols, Editor(s)

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