File Name: nonlinear optics of organic molecules and polymers .zip
Download book PDF. Front Matter Pages i-xiv. Impact of Dimensionality in the Optical Nonlinearities. Pages Delhalle, M. Dory, J. Fripiat, J. Sinclair, D. Moses, K. Akagi, A. Grossman, J. Heflin, K. Wong, O. Zamani-Khamiri, A. Ledoux, D. Josse, J. Zyss, T. McLean, R. Hann, P. Gordon et al. Studies of Structure-Property Relations. Bubeck, A. Kaltbeitzel, R.
Lenz, D. Neher, J. Stenger-Smith, G. Taliani, R. Zamboni, G. Ruani, P. Ostoia, A. Bolognesi, M. Catellani et al. Ye, N. Minami, T. Marks, J. Yang, G. Bubeck, D. Neher, A. Kaltbeitzel, G. Duda, T. Arndt, T. Sauer et al. Williams, T. Penner, J. Schildkraut, N. Tillman, A. Ulman, C. Cubic Susceptibility of Organic Molecules in Solution.
Bertault, L. Toupet, A. Collet, J. George I. Stegeman, Ray Zanoni, K. Rochford, Colin T. Organic Integrated Optical Devices. Lytel, G. Lipscomb, M. Stiller, J. Thackara, A. Sohn, K. Singer, M. Kuzyk, W. Holland, H. Katz, C. Dirk et al. Overview-Nonlinear Optical Organics and Devices.
Linear Electrooptic Coefficient of a Ferroelectric Polymer. Levy, V. Dentan, M. Dumont, P. Robin, E. Lessard, J. Couture, P.
Nunzi, J. Ferrier, R. Ultrafast Phenomena in Conjugated Polymers. Device Applications and Materials Requirements. Polymer Synthesis for Nonlinear Optics and Characterization. Characterization Techniques. Back Matter Pages About this book Introduction 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. 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. Editors and affiliations.
Organic semiconductors as active materials in thin-film electronic devices such as alkynes, heterocycles, dyes, ferrocenes, spiranes, or porphyrins, with special geometries and certain electronic molecular parameters, which possess nonlinear optical NLO properties and offer several major advantages over their inorganic counterparts, are presented in this chapter. There are a number of simple and versatile techniques that can be employed for the deposition of these important classes of materials. The matrix-assisted pulsed laser evaporation MAPLE technique provides advantages with regard to making organic films of different morphologies on different types of substrates. New insights into the crystallization growth mechanisms in MAPLE-deposited conjugated polymer films, which realize the connection between the structure and the carrier transport properties, are discussed herein. Second harmonic generation SHG capabilities of the thin films were also investigated. Applied Surface Science. During the last decades, the nonlinear optical NLO materials have gained significant role because of their various applications in medicine, molecular switches, luminescent materials, laser technology, spectroscopic and electrochemical sensors, data storage, microfabrication and imaging, modulation of optical signals, and telecommunication [ 1 , 2 , 3 ].
Upon complexation, the DR1 and SP molecules are free to align themselves along an applied electric field and show high order parameters of approximately 0. Nonlinear optical NLO material possessing optical modulation capabilities including changing optical phase, changing optical frequency, or coupling more than two light beams to increase or decrease frequency has recently become the most significant development goal for photonic devices [ 1 , 2 ]. Through the development of NLO materials, photonics can be used as a future carrier of information and overcome transmission bottlenecks for current electronic transmission methods, including the resistive losses that occur with electrons moving through metal wires as the frequency of information increases [ 3 ]. Although general NLO organic molecules have excellent NLO properties, their commercial applications are limited because of the difficulty of their processing. By combining NLO molecules with polymers, the high NLO susceptibility, fast response time, low dielectric constant, small dispersion in refractive index, structural flexibility, and ease of material processing have brought NLO polymers to the forefront of NLO research [ 4 ].
Second-order nonlinear optical NLO materials have played a very important role in laser technology since the invention of the laser. The materials have been developed from inorganic crystals to organic molecules and polymers. The search for new second-order NLO materials with better performance has continuously been in the frontier of materials science and optical engineering. If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using Copyright Clearance Center.
Nonlinear Optical Properties of Organic Molecules and Crystals, Volume 1 discusses the nonlinear optical effects in organic molecules and crystals, providing a classical distinction between quadratic and cubic processes. This book begins with a general overview of the basic properties of organic matter, followed by a review on the benefits derived from quantum-chemistry-based models and growth and characterization of high quality, bulk organic crystals and waveguided structures. A case study focusing on a specific material, namely urea, which exemplifies a situation in which transparency in the UV region has been purposely traded for nonlinear efficiency is also deliberated. This text concludes with a description of a type of trade-off between the unpredictable orientation of molecules in crystalline media, polarity of liquid-crystalline structures, and dominant electronic contribution to the electro-optic effect. This publication is beneficial to solid-state physicists and chemists concerned with nonlinear optical properties of organic molecules and crystals. Introduction II. Structure III.
Theoretical nonlinear optics equivalence between mesoionic and polyenic bridges in push-pull compounds. In this work we report a semiempirical investigation with the purpose of establishing an equivalence in terms of the value of the first static hyperpolarizability, b 0 , of push-pull compounds of the type electron-acceptor A - bridge - electron-donor D , either formed by polyenic bridges or by mesoionic bridges, keeping unchanged both D and A groups. The ground state geometries of the molecules were optimized via AM1 using Mopac93r2 program. Our results indicate that a bridge formed by a single mesoionic ring can be equivalent to seven or more conjugated double bonds, depending on the ring, reaffirming that mesoionic rings constitute promising materials for photonics applications. Keywords: hyperpolarizabilities, polyenes, mesoionic.
Отступив в кабинет Стратмора, Сьюзан почувствовала, что начинает терять сознание. В горле нестерпимо горело. Все вокруг светилось ярко-красными огнями. Шифровалка умирала. То же самое будет и со мной, - подумала. Сьюзан вспомнила о единственном остающемся выходе - личном лифте Стратмора.
В следующую секунду, со сломанными шейными позвонками, он сполз на пол. ГЛАВА 61 Джабба лежал на спине, верхняя часть туловища скрывалась под разобранным компьютером. Во рту у него был фонарик в виде авторучки, в руке - паяльник, а на животе лежала большая схема компьютера. Он только что установил новый комплект аттенюаторов на неисправную материнскую плату, когда внезапно ожил его мобильный. - Проклятие! - выругался он, потянувшись к телефону сквозь сплетение проводов. - Джабба слушает.