Photoinduced Modifications of the Nonlinear Optical Response in Liquid Crystalline Azopolymers [electronic resource] /
Alicante, Raquel.author.
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 their nonlinear 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.
Description based upon print version of record.
Thesis (doctoral)--University of Spain.
Includes bibliographical references.
Introduction and Basic Theory -- Experimental Methods.- Nonlinear Optical Molecular Response -- Piperazine Azopolymer Thin Films -- Films of Doped Low Polar Azopolymers -- Nonlinear Optical Gratings -- 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 their nonlinear 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.
Lasers.
Photonics.
Optical materials.
Electronic materials.
Surfaces (Physics).
Interfaces (Physical sciences).
Thin films.
Amorphous substances.
Complex fluids.
Materials-Surfaces.
Optics, Lasers, Photonics, Optical Devices.
Optical and Electronic Materials.
Surface and Interface Science, Thin Films.
Soft and Granular Matter, Complex Fluids and Microfluidics.
Surfaces and Interfaces, Thin Films.