Download or read book Optical Phase Conjugation with Photorefractive Sn2P2S6 written by Serguey Odoulov and published by . This book was released on 1998 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report results from a contract tasking Dynamic Holography Group, Institute of Physics. National Academy of Sciences as follows: The contractor will investigate getting the largest possible phase conjugate reflectivity in Sn2P2S6 by optimizing the usual parameters (such as pump intensity ratio, signal to pump intensity ratio, angle of incidence for pump and probe waves, polarization of interacting waves, orientation of waves with respect to sample principle axes) and frequency shift, a new parameter of special importance of Sn2P2S6. To achieve this the contractor shall perform the following: (1) The backward wave from four wave mixing will be used to generate the phase conjugate waves. Optimum conditions will be found to accomplish this. (2) Study different self-phase conjugate mirrors based on various coherent optical oscillators Optimize the performance of a double phase conjugating mirror. The study shows that SPS crystal can be efficiently used for conjugation of coherent light beams both in traditional backward-wave four-wave mixing geometry and in self-pumped coherent oscillator geometries. The samples belonging to Type I are suitable for conjugation both in the red (He-Ne laser light) and in near infrared (Nd(3+):YAG, 1.06 microns) while samples of Type II can be used for red and shorter infrared (0.8 ... 0.9 microns) region of spectrum. The phase conjugate intensity twice as large as the signal intensity was easily achieved in the red, at lambda = 0.63 microns. It is inevitable that with the same sample and the same refractive index modulation the phase conjugate reflectivity in infrared diminishes as lambda per 2 with the increasing lambda. This decrease can be compensated for by increasing the thickness of the samples used, what is essentially technological and not physical problem. With the available samples we got 17% phase conjugate reflectivity for Nd(3+):YAG, 1.06 microns radiation.
Download or read book Optical Phase Conjugation in Photorefractive Materials and Its Application to Image Processing written by and published by . This book was released on 1989 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photorefractive Materials and Their Applications 2 written by Peter Günter and published by Springer. This book was released on 2007-11-13 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second volume of the series on photorefractive effects focuses on the most recent developments in the field and highlights the parameters which govern the photoinduced nonlinearity. Besides reviewing conventional electro-optic crystals, this book deals with organic photorefractive materials, giving an in-depth assessment of the present understanding of the effect in a variety of materials. The materials considered in this volume will play a significant role in the development of applications such as presented in the third volume.
Download or read book Optical Phase Conjugation in Photorefractive Materials written by J. Feinberg and published by . This book was released on 1988 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The photorefractive crystal barium titanate has been studied for its inherent physical properties and for its applications, including the locking together of separate laser beams. The output beams of two separate argon-ion lasers were locked together to within less than one Hz for an indefinite time. The technique uses four-wave mixing in the barium titanate crystal. A ring self-pumped phase conjugator was altered by inserting a nonreciprocal phase element in the ring so as to break its time-reversal symmetry. The device could be made to produce controlled frequency shifts and new output modes. Applications of this device are in mode conversion for optical computing. A transient detection microscope was invented which displays the images of moving objects, and which removes the stationary background. This all-optical device uses two-wave mixing in a barium titanate crystal. Keywords: Phase conjugation; Lasers; Photorefraction Barium titanate; Optical computing. (jhd).
Download or read book Optical Phase Conjugation and Instabilities written by and published by . This book was released on 1983 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Ferroelectrics written by Ashim Kumar Bain and published by John Wiley & Sons. This book was released on 2017-01-27 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining both fundamental principles and real-life applications in a single volume, this book discusses the latest research results in ferroelectrics, including many new ferroelectric materials for the latest technologies, such as capacitors, transducers and memories. The first two chapters introduce dielectrics and microscopic materials properties, while the following chapter discusses pyroelectricity and piezoelectricity. The larger part of the text is devoted to ferroelectricity and ferroelectric ceramics, with not only their fundamentals but also applications discussed. The book concludes with a look at the future for laser printed materials and applications. With over 600 references to recent publications on piezoelectric and ferroelectric materials, this is an invaluable reference for physicists, materials scientists and engineers.
Download or read book Optical Mixing in Photorefractive Media written by and published by . This book was released on 1984 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crystal Optics Properties and Applications written by Ashim Kumar Bain and published by John Wiley & Sons. This book was released on 2019-05-14 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the properties and applications of photo-elastic, acousto-optic, magneto-optic, electro-optic, and photorefractive materials This book deals with the basic physical properties and applications of photo-elastic, acousto-optic, magneto-optic, electro-optic, and photorefractive materials. It also provides up-to-date information on the design and applications of various optoelectronic devices based on these materials. The first chapter of Crystal Optics: Properties and Applications covers the basic concepts of crystal optics, such as index ellipsoid or optical indicatrix, crystal symmetry, wave surface, birefringence, and the polarization of light. Chapter 2 reviews the physical phenomena of crystal optics in isotropic and crystalline materials. It describes in detail research information on modern photoelastic materials and reviews the up-to-date photoelastic device applications. Chapter 3 develops the underlying theory of acousto-optics from first principles, formulating results suitable for subsequent calculations and design. The fourth chapter describes the basic principles of magneto-optic effects and mode of interaction with magnetic materials. The fifth chapter provides an understanding of the physical phenomenon of the linear and quadratic electro-optic effects in isotropic and crystalline materials. The last chapter collects many of the most important recent developments in photorefractive effects and materials, and pays special attention to recent scientific findings and advances on photorefractive materials and devices. -Features up to date information on the design and applications of various optoelectronic devices -Looks at the basic concepts of crystal optics, including the polarization of light, effects of reflection and transmission of polarization and light polarizing devices, and more -Pays special attention to design procedures for the entire range of acousto-optic devices and various applications of these devices -Provides research information on modern magneto-optic materials and reviews the up-to-date magneto-optic device applications?up to terahertz (THz) regime Crystal Optics: Properties and Applications is an excellent book for the scientific community working in the field, including researchers, lecturers, and advanced students.
Download or read book Phase Conjugate Optics written by G. J. Dunning and published by . This book was released on 1984 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this program has been the study, both theoretically and experimentally, of the use of phase conjugate optics for information processing and image transmission applications. A significant portion of effort was directed toward an improved understanding of the photorefractive effort and its application to two-wave and four-wave mixing. The authors developed a model for grating formation in photorefractive materials and have derived expressions for figures of merit, which aid in selection of materials and the optimization of efficiency and speed. They also developed a model for two-wave mixing in the transient regime, and measured response times for both tow-wave and four-wave mixing. Other devices and materials considered for ODP applications include the Hughes liquid crystal light valve and long-chain organic molecules. Measurements on several ODP configurations were performed. First, they used optical phase conjugation to transmit an image through a 1.75 m multimode fiber, with a resolution of better than 15 lines/mm. Secondly, they demonstrated several static convolution and correlation operations, using character masks. Finally, they investigated the use of phase conjugation for real-time optical correlation. Results of each of these experiments are described. (Author).
Download or read book Photorefractive and Nonlinear Optical Properties of Sn2P2S6 written by Daniel Haertle and published by . This book was released on 2005 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photorefractive Optics written by Shizuhuo Yin and published by Academic Press. This book was released on 2000 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This text covers the fundamental aspects and the recent advances of photorefractive optics. There is a market potential for developing photorefractive (PR) optic devices for the needs of informational infrastructures. Photorefractive Optics provides an intensive background and details state-of-the-art technological applications for these needs. The book is a reference text for technical staff, research scientists, and graduate students who are working in the field."--BOOK JACKET
Download or read book Optical Phase Conjugation written by Malcolm Gower and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Phase Conjugation written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Photorefractive Effects Materials and Devices written by and published by . This book was released on 2005 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Phase Conjugation and Four wave Mixing written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Optical Beam Phase Conjugation by Nonlinear Refraction written by R. W. Hellwarth and published by . This book was released on 1981 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: We demonstrated the first cw phase-conjugating mirror with gain, and made a self-oscillating resonator which emitted a diffraction-limited optical beam while severe phase aberration was present in the resonator. We demonstrated storable and erasable phase-conjugate images in the nanosecond regime by a one-photon photorefractive process. We achieved the first demonstration of a wide angle (approx. 45 deg.) narrowband approx. 1/10 cm) optical filter using phase conjugation. We achieved the first demonstration of full vector-wave phase-conjugation by which an image was restored after double-passing a birefringent phase aberrator. We demonstrated edge-enhancement of an optical phase-conjugate image in real time. Studies of resonant nonlinear refraction and phase conjugation in sodium vapor continued. (Author).
