Download or read book Two Beam Coupling with Partially Coherent Light written by Hongzhi Kong and published by . This book was released on 1992 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: In photorefractive two-beam coupling the interference of two optical beams creates a refractive index grating resulting in energy transfer between the two beams. In models describing this effect it is usually assumed that both beams have perfect spatial coherence. For some applications such as achromatic volume, holography, multimode fiber gyroscopes and optical phase conjugation through turbulence, spatial coherence effects may become important in the coupling process. Reduced spatial coherence leads lower contrast interference fringes in an interference fringe region smaller than that of the perfectly coherent case. In recent work, we have made a quantitative study of the influence of these effects on coupling under the assumption that the coherence properties of the interacting beams do not change during the coupling. In the present work, we include the influence that beam coupling has on spatial coherence of the interacting beams. It is worth noting that the problem of spatial coherence in nonlinear wave mixing has been studied earlier. However, all of these studies referred to the case of fast Kerr medium. Photorefractive materials are much slower and cannot follow fast changes of the phases of interacting beams. Thus description of the mixing process will be different.

Download or read book Multiple beam Interference with Partially coherent Light written by Brian J. Thompson and published by . This book was released on 1965* with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in Photorefractive Nonlinear Optics written by Kazuo Kuroda and published by CRC Press. This book was released on 2002-03-14 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph collects together papers by leading researchers in the field of photorefractive nonlinear optics. All of the works are presented by eminent researchers in their field and cover topics such as wave mixing in nonlinear optical materials; photorefractive semiconductors; organic photorefractive materials and volume holographic storage.

Download or read book Increase of Mutual Coherence of Light Beams in Two wave Interaction in Photo refractive Crystals written by N. V. Bogodaev and published by . This book was released on 1992 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-wave mixing allows one to change effectively intensities, phases, space profiles, polarizations and time evolution of interacting beams. We will show, that two-wave mixing of partially coherent beams may be used to increase degree of coherence of these beams. The physics of the effect under discussion is as follows: two partially coherent beams write a refraction index grating in a nonlinear medium whose position and profile are practically stationary. Scattering of strong beam on this grating in the direction of the weak one means that this weak beam acquires an addition, that is coherent with the strong beam, thereby increasing degree of coherence of the beams. Similar effects were discussed in connection with scattering of different frequency components at the common running grating and with interaction of different polarization components.

Download or read book Coherent Optical Wireless Communication Principle and Application written by Xizheng Ke and published by Springer Nature. This book was released on 2023-01-01 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the key technologies of coherent optical wireless communication, covers topics such as beam coupling, signal optical polarization control and distorted wavefront correction. It discusses the principle of coherent optical communication and heterodyne detection conditions. In this book, the array coupling receiving technology and large aperture coupling technology are introduced to realize the spatial optical fiber coupling; simulated annealing algorithm, particle swarm optimization algorithm and SPO algorithm are used to control the polarization state of the signal beam; and the correction of distorted wavefront of the signal beam by adaptive optics technology and wavefront sensorless adaptive optics technology are analyzed, and the influence of beam mode on coherent detection performance is elaborated. Both theoretical deduction and experimental results are included in this book, which can help readers further understand the theoretical knowledge.

Download or read book Selected Papers on Photorefractive Materials written by Frederic M. Davidson and published by . This book was released on 1994 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Couplers and WDM Devices for Optical Transmission written by IGIC, Inc. Staff and published by Information Gatekeepers Inc. This book was released on 1994 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrodynamics and Optics written by Wolfgang Demtröder and published by Springer Nature. This book was released on 2019-08-30 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: This engaging text offers an accessible and clear treatment of the fundamentals of electromagnetics and optics, a core part of the standard undergraduate physics curriculum. Starting with static electric and magnetic fields, the book works through electromagnetic oscillations and the formation and propagation of electromagnetic waves, before moving on to geometric and wave optics, optical instrumentation and some discussion of new technologies in optics. The text is written from the experimental physics point of view, giving numerous real life examples and applications of devices. This highly motivating presentation deepens the knowledge in a very accessible way, carefully interweaving theory and practical applications. Students are guided through the material with well-chosen examples and case studies, and helpful chapter summaries are provided together with numerous exercises and detailed solutions, all intended to motivate and develop a well-founded understanding of the subject matter.

Download or read book Integrated Optics and Optical Switching written by IGIC, Inc. Staff and published by Information Gatekeepers Inc. This book was released on 1994 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in Optics written by and published by Elsevier. This book was released on 2002-05-17 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seven reviews articles presented in this volume cover a broad range of subjects. The first article is concerned with the use of active optics in modern, large telescopes. The second article discusses variational methods used in nonlinear fibre optics and in related fields. The article by O. Keller which follows deals with a topic of historical interest, presenting a account of researches of the Danish physicist L.V. Lorenz who in 1867 established the electrodynamic theory of light, independently of the work of James Clerk Maxwell. The fourth article is concerned with the canonical quantum description of light propagation in dielectric media. The fifth article by D. Dragoman describes the similarities and the differences between classical optics and quantum mechanics in phase space. The article by R. Boyd and D. Gauthier which follows, summarizes research on pulse propagation effects in resonant material system. The concluding article by A. Torre is concerned with the fractional Fourier transform and some of it applications in optics. It is clear that the articles in this volume cover a broad range of subjects, some of which are likely to be of interest to many scientists concerned with optical theory or with optical devices.

Download or read book Official Gazette of the United States Patent and Trademark Office written by United States. Patent and Trademark Office and published by . This book was released on 1999 with total page 1022 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coherent Fiber Optics Systems written by and published by Information Gatekeepers Inc. This book was released on 1990 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fiber Optic Lans Part 2 1989 1994 written by and published by Information Gatekeepers Inc. This book was released on 1994 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vectorial Optical Fields written by Qiwen Zhan and published by World Scientific. This book was released on 2014 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polarization is a vector nature of light that plays an important role in optical science and engineering. While existing textbook treatments of light assume beams with spatially homogeneous polarization, there is an increasing interest in vectorial optical fields with spatially engineered states of polarization. New effects and phenomena have been predicted and observed for light beams with these unconventional polarization states. This edited review volume aims to provide a comprehensive overview and summarize the latest developments in this important emerging field of optics. This book will cover the fundamentals including mathematical and physical descriptions, experimental generation, manipulation, focusing, propagation, and the applications of the engineered vectorial optical fields in focal field engineering, plasmonic focusing and optical antenna, single molecular imaging, optical tweezers/trapping, as well as optical measurements and instrumentations.

Download or read book Digital Holography Techniques and Applications written by Liangcai Cao and published by Frontiers Media SA. This book was released on 2022-11-16 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Progress in Optics A Tribute to Emil Wolf written by and published by Elsevier. This book was released on 2020-05-08 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Optics, Volume 65: A Tribute to Emil Wolf, provides the latest release in a series that presents an overview of the state-of-the-art in optics research. In this update, readers will find timely chapters on Specular mirror interferometer, Maximum Likelihood Estimation in the Context of an Optical Measurement, Surface Plasmons, The Development of Coherence Theory, and much more. Includes contributions from leading authorities in the field of optics Presents timely, state-of-the-art reviews in the field of optics