Stable polymer chromophore systems for nonlinear optics

Sigurd K. Schrader; Karl Pfeiffer; Freimut Reuther; Hans-Joachim Lorkowski

doi:10.1117/12.266808

6 February 1997 Stable polymer chromophore systems for nonlinear optics

Sigurd K. Schrader, Karl Pfeiffer, Freimut Reuther, Hans-Joachim Lorkowski

Proceedings Volume 2968, Optical Organic and Semiconductor Inorganic Materials; (1997) https://doi.org/10.1117/12.266808
Event: International Conference on Advanced Optical Materials and Devices, 1996, Riga, Latvia

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.

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Sigurd K. Schrader, Karl Pfeiffer, Freimut Reuther, and Hans-Joachim Lorkowski "Stable polymer chromophore systems for nonlinear optics", Proc. SPIE 2968, Optical Organic and Semiconductor Inorganic Materials, (6 February 1997); https://doi.org/10.1117/12.266808

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