Download or read book Studies of Optical Wave Mixing and Phase Conjugation written by and published by . This book was released on 1997 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research is to carry out theoretical and experimental investigation on optical wave mixing and phase conjugation in various nonlinear media, including photorefractive crystals and optical fibers, as well as novel applications using these nonlinear optical effects. During the research period, we have carried out intensive theoretical and experimental investigation in several important areas in wave mixing and phase conjugation, including the problem of multigrating effects in MPPC, fanning noise reduction by using partially coherent beams, grating enhancement and restoration in photorefractive media, fidelity of image restoration in multimode fibers, reflection-based phase conjugators, cross-talk noise in volume holographic storage, optical phase conjugation and pulse restoration in single mode fibers, photorefractive spatial mode converter for multimode-to-single-mode fiber-optic coupling, energy coupling by partially degenerate four-wave mixing in multichannel lightwave systems, form birefringence of layered media and volume gratings, the effect of beam coherence on mutually pumped phase conjugators (MPPC), polarization-dependent mechanism transformation during self-pumped phase conjugation in Ce:BaTiO3, intensity-dependent absorption and photorefractive properties of some new crystals, including Rb:KNbO3, and Ce:BaTiO3.
Download or read book Studies of Nonlinear Optical Wave Mixing and Phase Conjugation with Partially Coherent Waves written by and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research was the theoretical and experimental investigation of the physics of self-pumped and mutually-pumped phase conjugators and the development of novel applications. In addition, the scope of the research was expanded to include the effect of partial coherence (finite coherence length) on nonlinear wave mixing and phase conjugation in photorefractive media. Specifically, the effect of finite mutual coherence on the formation of index gratings, especially 2k-gratings, in two-wave mixing and self-pumped phase conjugation was studied.
Download or read book Optical Phase Conjugation written by Robert A. Fisher and published by Academic Press. This book was released on 2012-12-02 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book appears at a time of intense activity in optical phase conjugation. We chose not to await the maturation of the field, but instead to provide this material in time to be useful in its development. We have tried very hard to elucidate and interrelate the various nonlinear phenomena which can be used for optical phase conjugation.
Download or read book Studies of Optical Phase Conjugators and Applications written by Pochi Yeh and published by . This book was released on 1993 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this research is to theoretically investigate the physics of various optical phase conjugation processes (e.g., four-wave mixing, stimulated Brillouin scattering, photorefractive self- or mutually pumped phase conjugators) in nonlinear optical media (photorefractive crystals, optical fibers, etc.), and to explore theoretically and/or experimentally various kinks of applications of optical phase conjugation and nonlinear optical processes.
Download or read book Phase Conjugate Laser Optics written by Arnaud Brignon and published by John Wiley & Sons. This book was released on 2003-12 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete review of the state of the art of phase conjugate lasers, including laser demonstrations, performances, technology and selection of the most important class of nonlinear media. * Emphasizes the basic aspects of phase conjugation. * Chapter authors have all made major contributions to their subjects.
Download or read book Principles of Phase Conjugation written by B.Y. Zel'Dovich and published by Springer. This book was released on 2013-06-29 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been prompted by our des ire to share with others our apprecia tion of the harmony and beauty in a particular sphere of modern optics known as "optical phase conjugation". Practical applications of the phase conjugated wave are likely to be far-reaching. Optical phase conjugation (OPC) combines in itself aesthetic and pragmatic attractiveness, a synthesis that has made OPC a subject of general attention. The figure presents the ap proximate rate of publications (number of articles per year) on OPC in the world literature for recent years, the lower curve denoting the work carried out in the USSR. The efforts of a large unofficial international collective have yielded an impressive result. 150 100 50 1975 1980 At present, the physical pro ces ses underlying various OPC methods are quite understandable, and it is the physics of OPC to which our book is devoted. Practical and scientific applications of phase-conjugated waves, which are of no less interest, have been touched upon in short, as major achievements in this sphere are a matter of the future. Today there are two main methods of OPC: i) by backward stimulated light scattering, ii) by four-wave mixing. Naturally, much attention is given to these methods in our book which, after the introductory Chap. 1, can be divided into two almost independent parts - Chaps. 2 - 5, and Chaps. 6 - 8.
Download or read book Phase Conjugation in a Layer of Nonlinear Material written by Henk F. Arnoldus and published by Nova Publishers. This book was released on 2005 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical phase conjugation, or time reversal, of an optical wave front is an important technique to correct distortions in electromagnetic waves which are built up during propagation through a medium. The authors have studied theoretically optical phase conjugation through four-wave mixing in a slab of non-linear material. When two strong counter-propagating laser beams irradiate a non-linear crystal, the third-order susceptibility is activated, and can couple to an external weak probe field. A four-wave mixing process then generates a phase-conjugated or time-reversed replica of this incident probe field. They investigated the mechanism of the production of phase-conjugated radiation in such a configuration by solving the non-linear Maxwell equations for the electric field. The electric field in the material satisfies a set of two coupled wave equations, which couple positive and negative frequency components of the electric field. It is shown that the polarisation of the pumps and the tensorial nature of the interaction can be accounted for by a simple polarisation operator in the wave equations. Maxwell's equations for the field in the layer admit plane-wave solutions, although the dispersion relations are very different from the usual linear relation between the frequency and the wave number. The coupling between the two waves exhibits a strong resonance near the frequency of the pump beams. These plane-wave modes can be matched across the boundaries of the layer to the probe field. The response of the material can then be expressed in terms of Fresnel reflection and transmission coefficients for both s- and p-polarisation. We have derived simple matrix equations for the set of Fresnel coefficients, which can be solved numerically, and the have also obtained closed-form analytical solutions for the various Fresnel coefficients. It is indicated that our solutions reduce to earlier results in the appropriate limits.
Download or read book Elements of Quantum Optics written by Pierre Meystre and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the reviews: "This is a book that should be found in any physics library. It is extremely useful for all graduate students, Ph.D. students and researchers interested in the quantum physics of light." Optics & Photonics News
Download or read book Studies of Optical Beam Phase Conjugation and Electromagnetic Scattering Process written by and published by . This book was released on 1994 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this project we have performed both experimental and theoretical studies of optical beam phase-conjugation and of electromagnetic scattering and propagation with intense optical fields. During the reporting period we have: (1) demonstrated that atomic vapors require fewer photons to perform optical wave mixing that any other medium examined to date; (2) sowed theoretically that a one-joule broadband optical pulse, whose carrier wavelength is one micron, can impart nearly one GeV energy to a charged particle; (3) established the stringent experimental upper limits on the hyperpolarizabilities of C60 and C70 molecules in solution; (4) made the first direct time-of-flight measurements of the drift velocity of photoexcited carrier in any photorefractive insulator (n- type Bi12SiO2O); (5) determined the difference between the complex polarizabilities of different trap levels in insulators; (6) made quantitative predictions and measurements of spatial harmonic content of photorefractive gratings; (7) developed and applied moving-grating diagnostic techniques to photoexcited carriers; (8) demonstrated an exception to the law of exponential attenuation of weak monochromatic optical beams in a homogeneous medium. Optical beam phase conjugation, Nonlinear effects, High power optical beam propagation, Photorefractive effect.
Download or read book Optical Beam Phase Conjugation and Electromagnetic Scattering Process with Intense Fields written by Robert W. Hellwarth and published by . This book was released on 1988 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project performed both theoretical and experimental studies of optical beam phase-conjugation and electromagnetic scattering processes with intense optical fields. New bounds are established on the power and energy required to perform useful wave mixing in certain classes of nonlinear media. New physical processes are discovered for optical beam phase conjugation. The first complete physical characterizations of monopolar and bipolar photorefractive crystals is performed. Keywords: Optical beam phase conjugation; Nonlinear optics; High power; Optical beam propagation; Photorefractive effect. (jhd).
Download or read book Nonlinear Optics in Telecommunications written by Thomas Schneider and published by Springer Science & Business Media. This book was released on 2004-06-15 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive and didactic overview explores the nonlinear effects from a physical point of view and discusses the implications for signal capacity. Enriched with practical considerations and experimental results, the book offers special chapters dealing with applications of nonlinear effects for signal processing, ultrafast-optical switching, wavelength conversion, nonlinear amplification, and optical phase-conjugation. Equipped with chapter-end summaries and problems, this valuable reference can also serve as a graduate-level textbook.
Download or read book Four Wave Mixing and Optical Phase Conjugation in Vertical Cavity Surface Emitting Devices written by Gregory J. Vansuch and published by . This book was released on 1997-01-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four-wave mixing (FWM), a nonlinear optical process, was investigated in resonant cavity light emitting diodes (RCLEDs) and vertical cavity surface emitting lasers (VCSELs) below lasing threshold. These semiconductor photonic devices consisted of an optical gain region of quantum wells sandwiched between two distributed Bragg reflector (DBR) mirrors. Pump and probe lasers were injected into the devices to generate FWM. The dependence of FWM on bias current, pump laser power, and spectral and spatial separation between pump and probe lasers was investigated experimentally. A computer model of FWM based on the wave and carrier density equations was developed and agreed well with experimental results. Conjugate reflectivities of I were obtained in the VCSEL when bias current was below threshold but above transparency. Reasonable conjugate reflectivities were obtained for pump-probe detunings up to 2 GHz in both devices. Noncollinear FWM was performed for the first time in VCSELs or RCLEDs at angles up to 10 deg. Both experiment and model showed the possibility of generating a strong reflected conjugate signal while minimizing the reflected pump signal. The noncollinear FWM demonstrated the possibility of phase front conjugation for correcting aberrated signals in vertical cavity devices.
Download or read book Physics of Nonlinear Optics written by Guangsheng He and published by World Scientific. This book was released on 1999 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear optics has been a rapidly growing field in recent decades. It is based on the study of effects and phenomena related to the interaction of intense coherent light radiation with matter. Physics of Nonlinear Optics describes various major nonlinear optical effects, including physical principles, experimental techniques, up-to-date research achievements, and current or potential applications. This book features clear conceptual descriptions, concise formulations, and emphasizes both theoretical and experimental aspects of nonlinear optics. The readability of this book is particularly enhanced by a series of color photographs showing the spectacular appearances of various nonlinear optical effects. Both authors of this book are outstanding research scientists renowned in their professional areas. Their major research achievements in nonlinear optics include the pioneering studies of two-wave-coupled refractive-index change, Raman-enhanced self-focusing, optical-frequency Pockels effect, stimulated Kerr scattering, optical phase-conjugation via backward stimulated emission, and two-photon-absorption based optical limiting, stabilization and reshaping.
Download or read book Phase Conjugate Optics written by Junʼichi Sakai and published by McGraw-Hill Companies. This book was released on 1992 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting from basic principles and progressing to detailed discussions of applications, this book aims to provide an accessible introduction to phase conjugate optics; its fundamental concepts, including theories, experiments, materials and applications.
Download or read book Contemporary Nonlinear Optics written by Robert Boyd and published by Academic Press. This book was released on 2012-12-02 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contemporary Nonlinear Optics discusses the different activities in the field of nonlinear optics. The book is comprised of 10 chapters. Chapter 1 presents a description of the field of nonlinear guided-wave optics. Chapter 2 surveys a new branch of nonlinear optics under the heading optical solitons. Chapter 3 reviews recent progress in the field of optical phase conjugation. Chapter 4 discusses ultrafast nonlinear optics, a field that is growing rapidly with the ability of generating and controlling femtosecond optical pulses. Chapter 5 examines a branch of nonlinear optics that may be termed nonlinear quantum optics. Chapter 6 reviews the new field of photorefractive adaptive neural networks. Chapter 7 presents a discussion of recent successes in the development of nonlinear optical media based on organic materials. Chapter 8 reviews the field of nonlinear optics in quantum confined structures. Chapter 9 reviews the field of nonlinear laser spectroscopy, with emphasis on advances made during the 1980s. Finally, Chapter 10 reviews the field of nonlinear optical dynamics by considering nonlinear optical systems that exhibit temporal, spatial, or spatio-temporal instabilities. This book is a valuable source for physicists and other scientists interested in optical systems and neural networks.
Download or read book Principles of Phase Conjugation written by Boris I͡Akovlevich Zelʹdovich and published by Springer Verlag. This book was released on 1985 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Degenerate and Nearly Degenerate Four Wave Mixing of Laser Radiation in Plasmas written by and published by . This book was released on 1990 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Phase Conjugation is an area of nonlinear optics with a wide variety of potential applications. One method of generating as phase conjugate signal is with four wave mixing (FWM). In FWM, three input beams interact in a nonlinear medium, and a fourth beam is produced that is the phase conjugate of one of the input waves. Degeneate Four Wave Mixing (DFWM) is a special case of FWM in which all of the beams are at the same frequency. In a plasma, DFWM is an effective technique for phase conjugation in high density, low temperature plasmas. One way of enhancing the phase conjugate signal over and above the DFWM level is with Resonant Four Wave Mixing (RFWM), in which two of the input beams beat at a plasma resonance. In addition to enhancing the generated wave, RFWM can also serve as a diagnostic for many plasma parameters, such as the electron and ion temperatures, the ion acoustic velocity, and the damping rate. In this report, experimental evidence of RFWM with CO2 laser radiation (10.6 [mu]m) is presented, and the data is compared with theoretical predictions.
