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Photoinduced Modifications of the Nonlinear Optical Response in Liquid Crystalline Azopolymers [electronic resource] / by Raquel Alicante.

Por: Alicante, Raquel [author.]Tipo de material: TextoTextoSeries Springer Theses, Recognizing Outstanding Ph.D. ResearchEditor: Berlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 2013Descripción: XX, 200 p. online resourceTipo de contenido: text Tipo de medio: computer Tipo de portador: online resourceISBN: 9783642317569Trabajos contenidos: SpringerLink (Online service)Tema(s): Physics | Optical materials | Surfaces (Physics) | Physics | Laser Technology, Photonics | Optical and Electronic Materials | Surface and Interface Science, Thin Films | Soft and Granular Matter, Complex Fluids and Microfluidics | Surfaces and Interfaces, Thin FilmsFormatos físicos adicionales: Sin títuloClasificación CDD: 621.36 Clasificación LoC:TA1671-1707TA1501-1820Recursos en línea: de clik aquí para ver el libro electrónico
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Springer eBooksResumen: 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 photo-addressability in order to tailor their nonlinear behaviour. The magnitude and symmetry of theirnonlinear response was successfully controlled via light irradiation and thermal treatments. Moreover, as a specific application, the recording of efficient NLO gratings was achieved and is described here.
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Introduction and Basic Theory -- Experimental Methods.-Nonlinear OpticalMolecular Response -- Piperazine Azopolymer Thin Films -- Films of Doped Low Polar Azopolymers -- Nonlinear OpticalGratings -- General Conclusions -- Appendices.

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 photo-addressability in order to tailor their nonlinear behaviour. The magnitude and symmetry of theirnonlinear response was successfully controlled via light irradiation and thermal treatments. Moreover, as a specific application, the recording of efficient NLO gratings was achieved and is described here.

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