TY - BOOK AU - ED - SpringerLink (Online service) TI - Photoinduced Modifications of the Nonlinear Optical Response in Liquid Crystalline Azopolymers T2 - Springer Theses, Recognizing Outstanding Ph.D. Research, SN - 9783642317569 AV - TA1671-1707 U1 - 621.36 23 PY - 2013/// CY - Berlin, Heidelberg PB - Springer Berlin Heidelberg, Imprint: Springer KW - Physics KW - Optical materials KW - Surfaces (Physics) KW - Laser Technology, Photonics KW - Optical and Electronic Materials KW - Surface and Interface Science, Thin Films KW - Soft and Granular Matter, Complex Fluids and Microfluidics KW - Surfaces and Interfaces, Thin Films N1 - Introduction and Basic Theory -- Experimental Methods.-Nonlinear OpticalMolecular Response -- Piperazine Azopolymer Thin Films -- Films of Doped Low Polar Azopolymers -- Nonlinear OpticalGratings -- General Conclusions -- Appendices; ZDB-2-PHA N2 - 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 UR - http://dx.doi.org/10.1007/978-3-642-31756-9 ER -