Photoinduced Modifications of the Nonlinear Optical Response in Liquid Crystalline Azopolymers

Nonfiction, Science & Nature, Technology, Lasers, Material Science
Cover of the book Photoinduced Modifications of the Nonlinear Optical Response in Liquid Crystalline Azopolymers by Raquel Alicante, Springer Berlin Heidelberg
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Author: Raquel Alicante ISBN: 9783642317569
Publisher: Springer Berlin Heidelberg Publication: October 2, 2012
Imprint: Springer Language: English
Author: Raquel Alicante
ISBN: 9783642317569
Publisher: Springer Berlin Heidelberg
Publication: October 2, 2012
Imprint: Springer
Language: English

Nonlinear optical (NLO) phenomena such as frequency conversion have played a key role in the development of photonic technologies. This thesis reports a detailed study of the molecular response of a large variety of push-pull organic compounds using the Second Harmonic Generation technique, which will serve as a starting point for the investigation at the macroscopic scale of azobenzene-based liquid crystalline polymeric films and their blends with highly efficient NLO
chromophores. These materials are designed with the aim of exploiting their photoadressability in order to tailor their nonlinear behaviour. The magnitude and symmetry of their NL response was successfully controlled via light irradiation and thermal treatments. Moreover, as a specific application, the recording of efficient NLO gratings was achieved.

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Nonlinear optical (NLO) phenomena such as frequency conversion have played a key role in the development of photonic technologies. This thesis reports a detailed study of the molecular response of a large variety of push-pull organic compounds using the Second Harmonic Generation technique, which will serve as a starting point for the investigation at the macroscopic scale of azobenzene-based liquid crystalline polymeric films and their blends with highly efficient NLO
chromophores. These materials are designed with the aim of exploiting their photoadressability in order to tailor their nonlinear behaviour. The magnitude and symmetry of their NL response was successfully controlled via light irradiation and thermal treatments. Moreover, as a specific application, the recording of efficient NLO gratings was achieved.

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