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Author : Andrew J. Pulham
Publisher :
ISBN 13 :
Total Pages : 378 pages
Book Rating : 4.:/5 (535 download)
Download or read book Novel Polymer Chromophores for Non-linear Optics written by Andrew J. Pulham and published by . This book was released on 1993 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (946 download)
Download or read book Design, Methodology and Preparation of Novel Polymers for Nonlinear Optics written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: One-pot post-polymerization modification reactions such as azo-coupling and tricyanovinylation reactions were employed to synthesize a series of polymers containing different nonlinear optical (NLO) chromophoric as well as ionic functionalities. We have extended and established the versatility of our earlier reported post-modification strategy to incorporate various heteroaromatic chromophores as well as ionic functionalities in the polymers, at the final stage of synthesis. The correlation between different heteroaromatic chromophore structures and the NLO properties of the polymers was extensively studied, Polymers containing heteroaromatic chromophores exhibit improved temporal stability and enhanced NLO activity. Polymers with ionic chromophores were employed to fabricate NLO active ultra-thin films using electrostatic self-assembling (ESA) technique. Attempts were also made to synthesize second order NLO active polydiacetylene derivatives using post azo-coupling reaction.
Author : Ch. Bosshard
Publisher : CRC Press
ISBN 13 : 9782884490078
Total Pages : 268 pages
Book Rating : 4.4/5 (9 download)
Download or read book Organic Nonlinear Optical Materials written by Ch. Bosshard and published by CRC Press. This book was released on 2001-08-24 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Nonlinear Optical Materials provides an extensive description of the preparation and characterization of organic materials for applications in nonlinear and electro-optics. The book discusses the fundamental optimization and practical limitations of a number of figures of merit for various optical parameters and gives a clinical appraisal of the potential of organic materials for applicators in optical technology. Among the topics addressed are the basic molecular design of ;nonlinear optical chromophores, fundamentals and novel techniques of organic crystal growth, preparation and characterization of Langmuir-Blodgett and polymer films, experimental methods for determining microscopic and macroscopic optical properties. Also included is a discussion of first results of the photorefractive effect in organic crystals and the potential of organics for photorefractive applications, as well as an extensive review of published linear and nonlinear optical measurement of organic materials.
Author : Hari Singh Nalwa
Publisher : CRC Press
ISBN 13 : 9780849389238
Total Pages : 898 pages
Book Rating : 4.3/5 (892 download)
Download or read book Nonlinear Optics of Organic Molecules and Polymers written by Hari Singh Nalwa and published by CRC Press. This book was released on 1996-12-20 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an excellent overview of the exciting new advances in nonlinear optical (NLO) materials and their applications in emerging photonics technologies. It is the first reference source available to cover every NLO material published through 1995! All theoretical approaches, measurement techniques, materials, technologies, and applications are covered. With more than 1,800 bibliographic citations, 324 figures, 218 tables, and 812 equations, this book is an invaluable reference source for graduate and undergraduate students, researchers, scientists and engineers working in academia and industries in chemistry, solid-state physics, materials science, optical and polymer engineering, and computational science.
Author : Hari Singh Nalwa
Publisher : CRC Press
ISBN 13 : 0429611617
Total Pages : 896 pages
Book Rating : 4.4/5 (296 download)
Download or read book Nonlinear Optics of Organic Molecules and Polymers written by Hari Singh Nalwa and published by CRC Press. This book was released on 2020-07-09 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of nonlinear optics emerged three decades ago with the development of the first operating laser and the demonstration of frequency doubling phenomena. These milestone discoveries not only generated much interest in laser science, but also set the stage for future work on nonlinear optics. This book presents an excellent overview of the exciting new advances in nonlinear optical (NLO) materials and their applications in emerging photonics technologies. It is the first reference source available to cover every NLO material published through 1995. All theoretical approaches, measurement techniques, materials, technologies, and applications are covered. With more than 1,800 bibliographic citations, 324 figures, 218 tables, and 812 equations, this book is an invaluable reference source for graduate and undergraduate students, researchers, scientists and engineers working in academia and industries in chemistry, solid-state physics, materials science, optical and polymer engineering, and computational science.
Author : Galina Todorova
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (489 download)
Download or read book Design, Synthesis and Characterization of Novel Second-order Nonlinear Optical Chromophores with Fused-ring Polyenes for Application in Polymeric Electro-optic Modulators written by Galina Todorova and published by . This book was released on 2000 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher : Information Gatekeepers Inc
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4./5 ( download)
Download or read book Orientation of Nonlinear Optical Chromophores in Polymer Fibres Investigated in Hyper-Rayleigh Scattering Gemoetry Using Femtosesecond Pulses written by and published by Information Gatekeepers Inc. This book was released on with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Messier
Publisher : Springer Science & Business Media
ISBN 13 : 9401133700
Total Pages : 537 pages
Book Rating : 4.4/5 (11 download)
Download or read book Organic Molecules for Nonlinear Optics and Photonics written by J. Messier and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Photonics is being labelled by many as the technology for the 21st century. Because of the structural flexibility both at the molecular and bulk levels, organic materials are emerging as a very important class of nonlinear optical materials to be used for generating necessary nonlinear optical functions for the technology of photonics. Since the last NATO advanced research workshop on "Polymers for Nonlinear Optics"held in June 1988, at Nice - Sophia Antipolis, France. there has been a tremendous growth of interest worldwide and important development in this field. Significant progress has been made in theoretical modeling, material development, experimental studies and device concepts utilizing organic materials. These important recent developments provided the rationale for organizing the workshop on "Organic Materials for Nonlinear Optics and Photonics" which was held in La Rochelle, France, in August 1990. This proceeding is the outcome of the workshop held in La Rochelle. The objective of the workshop was to bring together scientists and engineers of varied backgrounds working in this field in order to assess the current status of this field by presenting significant recent developments and make recommendations on future directions of research. The workshop was multidisciplinary as it had contributions from chemists, physicists, materials scientists and device engineers. The participants were both from industries and universities. The workshop included plenary lectures by leading international scientists in this field, contributed research papers and a poster session. Panel discussion groups were organized to summarize important developments and to project future directions.
Author : Geoffrey A. Lindsay
Publisher :
ISBN 13 :
Total Pages : 564 pages
Book Rating : 4.3/5 (91 download)
Download or read book Polymers for Second-order Nonlinear Optics written by Geoffrey A. Lindsay and published by . This book was released on 1995 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the most recent developments in second-order nonlinear optical polymers. Covers the most important technologies necessary to achieve commercially viable devices based on special polymeric materials with second-order nonlinear optical properties. Discusses important molecular design considerations, how to process the polymers into films, the stability of the films, their optical properties, and prototype devices that can be made from these films.
Author : Hilary S. Lackritz
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (227 download)
Download or read book High Temperature Polymer for Second Order Nonlinear Optics for Photonic Materials written by Hilary S. Lackritz and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are examining a variety of novel high temperature stable polymers as new materials for second order nonlinear optical (NLO) and photorefractive devices. Current polymers have sufficient optical signal generated by available chromophores, but are not practical for device applications because of limitations in the temporal stability of the dopant orientation in the polymer caused by poor thermal stability of the host. This is a novel approach for developing a new class of photonic materials with superior thermal and temporal stability and is the first attempt to design a second order NLO polymer with controllable, tailorable local physical and electrical properties. A second, equally important goal is to understand the basic polymer physics controlling the thermal and temporal stability of the optical chromophore orientation. This will determine not only the overall efficiency of the materials for device applications, but will generate substantial information about mobility in high temperature stable polymer systems.
Author : Sharon A. Taylor
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (227 download)
Download or read book Chromophore Motion in Polymers for Nonlinear Optics by Solid-State NMR. written by Sharon A. Taylor and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is much current interest in polymer materials for nonlinear optical (NLO) applications. These materials are commonly prepared by either dissolving (doping) a suitable NLO chromophore into a glassy or liquid crystalline polymer, or by covalently attaching the chromophore to the polymer host either by direct synthesis or radiative crosslinking. Regardless of the method of preparation, macroscopic orientation of the chromophore must be induced and maintained for efficient second-harmonic generation (SHG) in frequency doubling applications. For the most common use of a glassy polymer host, chromophore orientation is achieved by the process of poling. Briefly, the material is heated above Tg, a strong electric field is applied to orient the chromophores, and the material is cooled below Tg to lock in the orientation before the field is removed. A major problem in polymeric NLO materials is loss of SHG properties over time. For example, in a study of 4-(dimethylamino)-4'-nitrostilbene in PMMA, Hampsch and coworkers reported that up to 80% of the SHG efficiency was lost after 12 h at 298 K.
Author : C. Taliani
Publisher : Elsevier
ISBN 13 : 0444596925
Total Pages : 480 pages
Book Rating : 4.4/5 (445 download)
Download or read book Synthetic Materials for Non-Linear Optics and Electronics written by C. Taliani and published by Elsevier. This book was released on 1993-04-21 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent progress in organic and LED structures, in photorefractive response in molecular ferromagnetism, as well as the ultrafast and large non-linear optical response in conjugated systems are attracting great interest from the scientific community. The discovery of fullerenes has added further impetus to this field. Two areas bear particular promise for the development of a new electronics based on SEM materials: the integration of organic materials into the planar silicon technology such as, for instance, the advances in "all organic" field-effect transistors (FET) and the new organic light emitting diodes (LED); and secondly the appearance of a totally new electronics in which photons, rather than electrons, carry the information and SEM materials act as switching devices. Both aspects and more are covered in this volume. The quality of the 52 contributions attests to the fact that this subject area has progressed from the level of a scientific curiosity to a mature field of materials science introducing important technological perspectives for electronic applications.
Author :
Publisher :
ISBN 13 :
Total Pages : 65 pages
Book Rating : 4.:/5 (227 download)
Download or read book High Temperature Nonlinear Optical Chromophores and Polymers written by and published by . This book was released on 1996 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed a thermal protocol for the evaluation of NLO chromophores for very high temperature electro-optical applications with poled polymers. This protocol has been demonstrated to have significant predictive utility for EO applications. We have demonstrated that while chromophore thermal instability and nonlinearity are linked, this relationship is not inviolable. Certain thermally stable NLO chromophores have been incorporated into polyimide derivatives either by flexible tether connections or by direct embedding of the donor portion into the polymer main chain. In each case, orientational stabilities for over 1000 hours at 100 C were achieved, so long as the Tg of the polymer exceeded 200 C. The embedding of the chromophore into the main chain gave polymers with exceptional thermal and oxidative stability and polymer Tg values which ranged from 250 - 350 C. Orientational stability of the embedded donor, poled polymers was outstanding and exceeded any reported in the literature, including those examples which had been stabilized by extensive crosslinking. Preliminary results on the low temperature poling of high Tg azo containing polymers by irradiation with polarized light in the presence of an electric field were encouraging as an alternative to thermal poling.
Author : Manthos G. Papadopoulos
Publisher : Springer Science & Business Media
ISBN 13 : 1402048505
Total Pages : 676 pages
Book Rating : 4.4/5 (2 download)
Download or read book Non-Linear Optical Properties of Matter written by Manthos G. Papadopoulos and published by Springer Science & Business Media. This book was released on 2007-05-03 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book assembles both theory and application in this field, to interest experimentalists and theoreticians alike. Part 1 is concerned with the theory and computing of non-linear optical (NLO) properties while Part 2 reviews the latest developments in experimentation. This book will be invaluable to researchers and students in academia and industry, particularlrly to anyone involved in materials science, theoretical and computational chemistry, chemical physics, and molecular physics.
Author :
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (227 download)
Download or read book Preparation of Stable Photopatternable Polymeric Materials for Non- Linear Optics written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several new functionalized chromophores have been prepared and tested in the preparation of optically stable, photopatternable, NLO polymers for second harmonic generation at the diode laser wavelength of 820 nm. In particular, chromophores containing the sulfonamide or sulfonate ester functionalities have been found to be extremely versatile as they allow attachment of a polymerizable group at the electron-poor end of NLO chromophores. The results of model studies confirm that the sulfonamide groups do not have a deleterious effect on NLO properties. Several new monomers containing 4-alkoxy-4'- sulfonamido-stilbene moieties have been prepared. The 4- alkoxy end of the chromophore 'is designed to allow its incorporation into a linear polymer backbone. The sulfonamido end of the chromophore has a polymerizable double bond that can be photocrosslinked after poling of the chromophores. As it is extremely important to carry out the photopatterning step without affecting the NLO chromophore or introducing any color into the imaged polymer, novel photoinitiators were tested and found to be suitable. The radiation induced photo-patterning step can be done without causing isomerization of the stilbene chromophores, or introducing any color into the patterned coating.
Author :
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (227 download)
Download or read book High Temperature Polymers for Second Order Nonlinear Optics: Photorefractive Polymides for Photonic Materials written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are examining a variety of novel high temperature stable polymers as new materials for second order nonlinear optical (NLO) device applications and modelling the rotational Brownian dynamics of chromophore orientation. Current polymers have sufficient optical signal generated by available chromophores, but are not practical for devices because of limitations in the temporal and thermal stability of the active chromophore orientation in the polymer matrix. This experimental and theoretical approach for developing a new class of photonic materials with superior thermal and temporal stability is a first attempt to design second order NLO polymer with controllable, tailorable local physical and electrical properties. A second, equally important goal is to theoretically and experimentally understand the basic polymer physics controlling the thermal and temporal stability of the optical chromophore orientation. This will determine not only the overall efficiency of the materials for device applications, but will generate substantial information about local mobility in high temperature stable polymers. jg p.8.
Author : Seizo Miyata
Publisher : CRC Press
ISBN 13 : 1000124681
Total Pages : 290 pages
Book Rating : 4.0/5 (1 download)
Download or read book Poled Polymers and Their Applications to SHG and EO Devices written by Seizo Miyata and published by CRC Press. This book was released on 2020-12-17 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poled polymers doped with nonlinear optically active chromophores combine the large second order nonlinearity of the dopant dye molecules with the optical quality of the polymer. The material design flexibility afforded to doped polymers makes them attractive in a large variety of devices and applications. This book addresses the critical science and technology issues in the development and application of poled polymers, with an emphasis on the stabilization of poled polymers and their special applications to second harmonic generation (SHG) and electro-optic (EO) devices.
