Nonlinear Optical Effects in Organic Polymers

Photonics, the counterpart of electronics, involves the usage of Photons instead of electrons to process information and perform various switching operations. Photonics is projected to be the technology of the future because of the gain in speed, processing and interconnectivity of network. Nonlinear optical processes will play the key role in photonics Where they can be used for frequency conversion, optical switching and modulation. Organic molecules and polymers have emerged as a new class of highly promising nonlinear optical materials Which has captured the attention of scientists world wide. The organic systems offer the advantage of large nonresonant nonlinearities derived from the 1T electrons contribution, femtosecond response time and the flexibility to modify their molecular structures. In addition, organic polymers can easily be fabricated in various device structures compatible with the fiber-optics communication system. The area of nonlinear optics of organic molecules and polymers offers exciting opportunities for both fundamental research and technologic development. It is truly an interdisciplinary area. This proceeding is the outcome of the first NATO Advanced Research WOrkshop in this highly important area. The objective of the workshop was to provide a forum for scientists of varying background from both universities and industries to come together and interface their expertize. The scope of the workshop was multidisciplinary with active participations from Chemists, physicists, engineers and materials scientists from many countries. Front Matter....Pages i-xiv Impact of Dimensionality in the Optical Nonlinearities....Pages 1-12 Theoretical Design of Organic Molecules and Polymers for Optoelectronics....Pages 13-28 Structural Relaxation and Nonlinear Zero-Point Fluctuations as the Origin of the Anisotropic Third-Order Nonlinear Optical Susceptibility in Trans-(CH) X ....Pages 29-45 Third-Order Nonlinear Susceptibility in Semiconducting Polymers....Pages 47-60 Recent Nonlinear Optical Studies of MNA and Conjugated Linear Chains....Pages 61-78 Quadratic Nonlinear Behaviour of Various Langmuir-Blodgett Molecules....Pages 79-91 Prediction of Third Order Nonlinear Optical Activity in Ordered Polymers....Pages 93-99 Effect of π-Electron Delocalization on the Second-Order Polarizability of Disubstituted Hydrocarbons....Pages 101-104 Studies of Structure-Property Relations....Pages 105-122 Synthesis of New Nonlinear Optical Ladder Polymers....Pages 123-141 Nonlinear Optical Properties of Poly(P-Phenylene Vinylene) Thin Films....Pages 143-147 The Synthesis and Properties of Some Novel Diacetylene Monomers and Polymers....Pages 149-158 Design and Optical Properties of a Low Energy Gap Conjugated Polymer: Polydithieno(3,4-b:3’,4’-d)Thiophene....Pages 159-172 Synthetic Approaches to Stable and Efficient Polymeric Frequency Doubling Materials. Second-Order Nonlinear Optical Properties of Poled, Chromophore-Functionalized Glassy Polymers....Pages 173-183 Langmuir-Blodgett Films of Rigid Rod Polymers with Controlled Lateral Orientation....Pages 185-193 Polymers and Molecular Assemblies for Second-Order Nonlinear Optics....Pages 195-218 Spectral Properties and Second-Harmonic Generation of Hemicyanine Dye in Langmuir-Blodgett Films....Pages 219-224 Cubic Susceptibility of Organic Molecules in Solution....Pages 225-245 Measurement of the Non-Linear Refractive Index of Some Metallocenes by the Optical Power Limiter Technique....Pages 247-251 Polymerization and X-Ray Structure of New Symmetrical and Unsymmetrical Diacetylenes....Pages 253-256 Third-Order Nonlinear Guided-Wave Devices....Pages 257-276 Organic Integrated Optical Devices....Pages 277-289 Orientationally Ordered Nonlinear Optical Polymer Films....Pages 291-297 Overview-Nonlinear Optical Organics and Devices....Pages 299-325 Non Linear Optical Polymers for Active Optical Devices....Pages 327-336 Linear Electrooptic Coefficient of a Ferroelectric Polymer....Pages 337-342 Application of Third-Order Non-Linearities of Dyed PVA to Real-Time Holography....Pages 343-349 Ultrafast Third-Order Non-Linear Optical Processes in Polymeric Films....Pages 351-363 Picosecond Phase Conjugation in Yellow Polydiacetylene Solutions....Pages 365-368 Picosecond Studies of Optical Stark Effect in Polydiacetylenes....Pages 369-374 Ultrafast Phenomena in Conjugated Polymers....Pages 375-378 Device Applications and Materials Requirements....Pages 379-381 Polymer Synthesis for Nonlinear Optics and Characterization....Pages 383-383 Characterization Techniques....Pages 385-387 Back Matter....Pages 389-396 Proceedings of the NATO Advanced Research Workshop, Sophia-Antipolis-Nice, France, May 19-20, 1988