Spatial Solitons in Lossy Photorefractive Media
Author | : Stephen Konstantine Kaladros |
Publisher | : |
Total Pages | : 174 |
Release | : 1995 |
Genre | : |
ISBN | : |
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Author | : Stephen Konstantine Kaladros |
Publisher | : |
Total Pages | : 174 |
Release | : 1995 |
Genre | : |
ISBN | : |
Author | : Mordechal Segev |
Publisher | : |
Total Pages | : 4 |
Release | : 1992 |
Genre | : |
ISBN | : |
Light solitons in space spatial soliton) have been under an intensive theoretical and experimental research in the last three decades. The solitons evolve from nonlinear changes in the refractive index of the material, due to the light intensity distribution. When the modulation of the index confines the light beam in such a way that diffraction is compensated for exactly, the beam becomes self-trapped, and is called a spatial soliton. The nonlinear effects, which are responsible to soliton formation, are in general Kerr-like effects, causing local index changes proportional to the local light power. The index changes needed for spatial solitons require high power densities, and often exceed 1MWatt/sq.cm. We present here a new type of solitons in space, generated by the photorefractive (PR) effect in the medium. The solitonic waveform modulates the refractive index due to the PR effect, compensates for the diffraction exactly, and causes the light beam to propagate with no spatial change. This specific index modulation is introduced by interference gratings between the pairs of the spatial components (which compose the light beam), that are translated into phase gratings by the PR effect. Since the efficiency of this effect is independent of absolute light intensity, our solitons can be generated even at very moderate light power densities. Moreover, the same solitonic waveform can propagate unchanged in the medium, at very high or very low light intensities.
Author | : Yafang Liu |
Publisher | : |
Total Pages | : 0 |
Release | : 2002 |
Genre | : |
ISBN | : |
Author | : Dragana Jović |
Publisher | : |
Total Pages | : |
Release | : 2005 |
Genre | : |
ISBN | : 9788672444537 |
Author | : Glen William McCarthy |
Publisher | : |
Total Pages | : |
Release | : 2006 |
Genre | : Photorefractive materials |
ISBN | : |
Author | : Hongxing Meng |
Publisher | : |
Total Pages | : 186 |
Release | : 1998 |
Genre | : Crystal optics |
ISBN | : |
Author | : Nail Akhmediev |
Publisher | : Springer Science & Business Media |
Total Pages | : 472 |
Release | : 2005-04-25 |
Genre | : Technology & Engineering |
ISBN | : 9783540233732 |
This volume is devoted to the exciting topic of dissipative solitons, i.e. pulses or spatially localised waves in systems exhibiting gain and loss. Examples are laser systems, nonlinear resonators and optical transmission lines. The physical principles and mathematical concepts are explained in a clear and concise way, suitable for students and young researchers. The similarities and differences in the notion of a soliton between dissipative systems and Hamiltonian and integrable systems are discussed, and many examples are given. The contributions are written by the world's leading experts in the field, making it a unique exposition of this emerging topic.
Author | : Alwyn Scott |
Publisher | : Routledge |
Total Pages | : 2881 |
Release | : 2006-05-17 |
Genre | : Reference |
ISBN | : 1135455570 |
In 438 alphabetically-arranged essays, this work provides a useful overview of the core mathematical background for nonlinear science, as well as its applications to key problems in ecology and biological systems, chemical reaction-diffusion problems, geophysics, economics, electrical and mechanical oscillations in engineering systems, lasers and nonlinear optics, fluid mechanics and turbulence, and condensed matter physics, among others.
Author | : E. R. Pike |
Publisher | : Elsevier |
Total Pages | : 1831 |
Release | : 2001-10-09 |
Genre | : Science |
ISBN | : 0080540732 |
Scattering is the collision of two objects that results in a change of trajectory and energy. For example, in particle physics, such as electrons, photons, or neutrons are "scattered off" of a target specimen, resulting in a different energy and direction. In the field of electromagnetism, scattering is the random diffusion of electromagnetic radiation from air masses is an aid in the long-range sending of radio signals over geographic obstacles such as mountains. This type of scattering, applied to the field of acoustics, is the spreading of sound in many directions due to irregularities in the transmission medium. Volume I of Scattering will be devoted to basic theoretical ideas, approximation methods, numerical techniques and mathematical modeling. Volume II will be concerned with basic experimental techniques, technological practices, and comparisons with relevant theoretical work including seismology, medical applications, meteorological phenomena and astronomy. This reference will be used by researchers and graduate students in physics, applied physics, biophysics, chemical physics, medical physics, acoustics, geosciences, optics, mathematics, and engineering. This is the first encyclopedic-range work on the topic of scattering theory in quantum mechanics, elastodynamics, acoustics, and electromagnetics. It serves as a comprehensive interdisciplinary presentation of scattering and inverse scattering theory and applications in a wide range of scientific fields, with an emphasis, and details, up-to-date developments. Scattering also places an emphasis on the problems that are still in active current research. The first interdisciplinary reference source on scattering to gather all world expertise in this technique Covers the major aspects of scattering in a common language, helping to widening the knowledge of researchers across disciplines The list of editors, associate editors and contributors reads like an international Who's Who in the interdisciplinary field of scattering
Author | : |
Publisher | : |
Total Pages | : 2762 |
Release | : |
Genre | : Chemistry |
ISBN | : |