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Author: Viola Folli
Publisher: Springer Science & Business Media
ISBN: 9400745133
Category : Technology & Engineering
Languages : en
Pages : 122
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Book Description
Disorder is everywhere, inherently present in nature, and is commonly believed to be a synonymous with disturbance. As a consequence, the methodical and customary study of the dynamics of the electromagnetic field, both in the linear and nonlinear optical regimes, leans to rule out it from the treatment. On the other hand, nonlinearity enriches the physical disciplines and brings them closer to reality with respect to the linear approximation. Nonlinearity allows to stimulate a wide and rich ensemble of optical responses that beautifies the role of matter in the active processes with electromagnetic fields. Independently of each other, both of these mechanisms foster localization of light. What happens when light enlightens their synergistic interaction? When pushed together, light, disorder and nonlinearity make new and intriguing phenomena emerge. This text provides a comprehensive investigation of the role of disorder in the nonlinear optical propagation both in transparent media and lasers. Eventually, disorder promotes and enhances complex nonlinear dynamics opening new perspectives in applied research driven by the processes of localization of the electromagnetic field. The first experimental study of laser emission in granular media unveils how randomness magnifies and largely affect laser-matter interactions. Viola Folli in her research work touches and deepens the leading milestones of the new science named Complex Photonics.
Author: Viola Folli
Publisher: Springer Science & Business Media
ISBN: 9400745133
Category : Technology & Engineering
Languages : en
Pages : 122
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Book Description
Disorder is everywhere, inherently present in nature, and is commonly believed to be a synonymous with disturbance. As a consequence, the methodical and customary study of the dynamics of the electromagnetic field, both in the linear and nonlinear optical regimes, leans to rule out it from the treatment. On the other hand, nonlinearity enriches the physical disciplines and brings them closer to reality with respect to the linear approximation. Nonlinearity allows to stimulate a wide and rich ensemble of optical responses that beautifies the role of matter in the active processes with electromagnetic fields. Independently of each other, both of these mechanisms foster localization of light. What happens when light enlightens their synergistic interaction? When pushed together, light, disorder and nonlinearity make new and intriguing phenomena emerge. This text provides a comprehensive investigation of the role of disorder in the nonlinear optical propagation both in transparent media and lasers. Eventually, disorder promotes and enhances complex nonlinear dynamics opening new perspectives in applied research driven by the processes of localization of the electromagnetic field. The first experimental study of laser emission in granular media unveils how randomness magnifies and largely affect laser-matter interactions. Viola Folli in her research work touches and deepens the leading milestones of the new science named Complex Photonics.
Author: Mikhail Noginov
Publisher: Springer
ISBN: 0387251057
Category : Science
Languages : en
Pages : 254
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Book Description
Random lasers are the simplest sources of stimulated emission without cavity, with the feedback provided by scattering in a gain medium. First proposed in the late 1960s, random lasers have grown to a large research field. This book reviews the history and the state of the art of random lasers, provides an outline of the basic models describing their behavior, and describes the recent advances in the field. The major focus of the book is on solid-state random lasers. However, it also briefly describes random lasers based on liquid dyes with scatterers. The chapters of the book are almost independent of each other. So, the scientists or engineers interested in any particular aspect of random lasers can read directly the relevant section. Researchers entering the field of random lasers will find in the book an overview of the field of study. Scientists working in the field can use the book as a reference source.
Author: Vladimir M. Shalaev
Publisher: Springer
ISBN: 3540491848
Category : Science
Languages : en
Pages : 159
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Book Description
Nonlinear Optics of Random Media reviews recent advances in in one of the most prominent fields of physics. It provides an outline of the basic models of irregular structures of random inhomogeneous media and the approaches used to describe their linear electromagnetic properties. Nonlinearities in random media are also discussed. The chapters can be read independently, so scientists and students interested in a specific problem can go directly to the relevant text.
Author: Vladimir M. Shalaev
Publisher:
ISBN: 9783662156391
Category :
Languages : en
Pages : 172
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Book Description
Author: E. Garmire
Publisher: Springer Science & Business Media
ISBN: 1461537266
Category : Technology & Engineering
Languages : en
Pages : 431
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Book Description
The Fourth USA-USSR Symposium. on The Physics of Optical Phenomena and Their Use as Probes of Matter, was held in Irvine, California, January 23-27, 1990. Participating in the Symposium were 22 scientists from the USSR and 29 from the USA. In addition, to provide an international dimension to this Symposium without, however, compromising significantly its essentially binational character, 7 non-US and non-USSR scientists were invited to take part in it. The present volume is the proceedings of that Symposium, and contains all manuscripts received prior to August 1, 1990, representing. scientific contributions presented. A few manuscripts were not received, but for completeness the corresponding abstract is printed.. Three previous USA/USSR Binational Symposia on related topics have been held, viz. "Theory of Light Scattering in Condensed Matter" (Moscow, 1975), "Light Scattering in Solids" (New York, 1979), and "Laser Optics of Condensed Matter" (Leningrad, 1987). These meetings were evaluated by the participants as highly successful and provided invaluable oppor tunities for researchers to exchange information and to initiate colla borative work which led to research visits by US physicist to Soviet laboratories, and vice versa, and which continue to the present day.
Author: Vladimir M. Shalaev
Publisher: Springer Science & Business Media
ISBN: 9783540656159
Category : Science
Languages : en
Pages : 184
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Book Description
Nonlinear Optics of Random Media reviews recent advances in in one of the most prominent fields of physics. It provides an outline of the basic models of irregular structures of random inhomogeneous media and the approaches used to describe their linear electromagnetic properties. Nonlinearities in random media are also discussed. The chapters can be read independently, so scientists and students interested in a specific problem can go directly to the relevant text.
Author: Vladimir M. Shalaev
Publisher: Springer Science & Business Media
ISBN: 3540449485
Category : Science
Languages : en
Pages : 480
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Book Description
The contributors to the book are world best experts in the optics of random media; they provide a state-of-the-art review of recent developments in the field including nonlinear optical and magneto-optical properties, Raman and hyper-Raman scattering, laser action, plasmon excitation and localized giant fields, imaging and spectroscopy of random media
Author: Elsa M. Garmire
Publisher: Springer Science & Business Media
ISBN: 9780306438202
Category : Science
Languages : en
Pages : 472
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Book Description
Session 1 Elementary Excitations and Excitation Transport.- Picosecond Resolved Optically Driven Phonon Dynamics.- Relaxation and Propagation of High Frequency Phonons in Thin Crystalline Plates After Intense Laser Pumping.- Evolution in Real Time and Space of Short Polariton Pulses in Crystals.- Quasielastic Electronic Light Scattering in Semiconductors at Low Concentrations of Current Carriers.- Condensed Matter Science With Far Infra Red Free Electron Lasers (Abstract).- Nonequilibrium Terahertz Range Acoustic Phonons and Luminescence of Excitons in Semiconductors.- Session II Optical Properties of Surfaces and Interfaces.- Nonlinear Optical Studies of Molecular Adsorbates.- Enhancement of Exciton Transition Probabilities in Ultrathin Films of Cadmium Telluride.- Studies of Semiconductor Surfaces and Interfaces by Three Wave Mixing Spectroscopy (Abstract).- Time-Resolved Resonant Reflection of Light.- Femtosecond Photoemission Studies of Image Potential and Electron Dynamics in Metals.- High Intensity, Ultrashort Pulse Laser Heated Solids.- Session III Optical Studies of Growth, Instabilities and Pattern Formation.- Control of Transversal Interactions in Nonlinear Optics: New Spatio-Temporal Effects in Nonlinear Wave Dynamics (Abstract).- Synchronization of Atomic Quantum Transitions by Light Pulses.- Chaos in Nonlinear Optics.- Self-Organizaiton and Spatio-Temporal Chaos in Phase-Locked Semiconductor Laser Arrays (Abstract).- Competitive and Cooperative Dynamics in Optical Neural Networks (Abstract).- Transitions Between Ordered and Disordered Solid-Melt Patterns Formed on Silicon by Continuous Laser Beams: Competition Between Electrodynamics and Thermodynamics.- Session IV Elementary Excitations and Excitation Transport.- Light Scattering in Oxide Superconductors.- Raman Scattering in High-Tc Superconductors YBa2Cu3Ox With Different Oxygen Contents.- Raman Scattering from High Temperature Superconductors.- Decay of Exciton Gratings in Anthracene: Anisotropy of Lowest Exciton Bands and Coexistence of Longpath and Shortpath Waveguide Modes.- Excitation Transport in Polymeric Solids.- Vibron Lifetimes in Molecular Crystals.- Session V Optical Properties of Critical Phenomena Random Systems, and Coherent Phenomena.- Anomalies of the Elastic Light Scattering at Phase Transitions in Crystals with Point Defects.- Dynamical Fluctuations in a Dipolar Glass.- Localization of Light in Random Media (Abstract).- Quantum Optic and Transient Effects of Excitonic Polaritons, and Properties of Phonoritons.- Nonclassical Field Correlations in Quantum Optics (Abstract).- Phase-Conjugated Wave Enhanced by Weak Localization of Exciton-Polaritons.- Session VI Nonlinear Optical Properties of Semiconductors Organics and Fibers.- The Historical Relationship Between Nonlinear Optics and Condensed Matter (Abstract).- Optical Nonlinearities Enhanced by Carrier Transport.- Organic Nonlinear Optical Materials and Devices for Optoelectronics (Abstract).- Nonlinear Optical Susceptibilities of Surface Layers of Metals and Super- and Semiconductors Related to Electronic Structure and Crystal Symmetry.- Second Harmonic Generation in Optical Fibers.- Nonlinear Optical Probes of Glassy Polymers.- Session VII Quantum Wells.- Photoluminescence of Hot Electrons and Scattering Processes in Quantum-Well Structures.- High Resolution Nonlinear Laser Spectroscopy Measurements of Exciton Dynamics in GaAs Quantum Well Structures.- Optical Spectroscopy in the Regime of the Fractional Quantum Hall Effect.- Geminate Recombination in MQW Structures in a Magnetic Field.- Investigation of Two-Electron-Hole Pair Resonances in Semiconductor Quantum Dots.- Many Body Effects in Homogeneous Quasi 2D Electron-Hole Plasma in Undoped and Modulation Doped InGaAs Single Quantum Wells.- Session VIII Recent Significant Developments.- Pulsed Diffusing-Wave Spectroscopy in Dense Colloids.- Waves on Corrugated Surfaces: K-Gaps and Enhanced Backscattering.- Black Hole Radiation: Can Vir...
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The objective of the research program was to investigate nonlinear optical phenomena and optical amplification and lasing in highly scattering active and non-active random media. The aim of research was to develop a deeper fundamental understanding of light propagation in active random media for future generation of optical display, imaging techniques and laser devices. Two photon excited fluorescence and second harmonic generation tomographic imaging of biomedical tissues were demonstrated. Lasing and optical amplification from dyed active turbid media and biological tissues were explored. A feedback mechanism from scattering walls was proposed to describe lasing characteristics in random media. We have published 12 papers and submitted two patent applications.
Author: D. V. Skobel tsyn
Publisher: Springer
ISBN: 9781461575214
Category : Technology & Engineering
Languages : en
Pages : 203
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Book Description
In this paper we investigated the dynamics of the processes occurring in a Q-switched laser. This work was stimulated by the lack of data on the spatial and temporal development of generation, despite the obvious importance of such data in the use of giant light pulses in in vestigations of the nonlinear interaction of radiation and matter. From a systematic con sideration of a relatively simple model of a Q-switched laser we analytically investigated two main phases of development of the giant pulse - the phase of linear development of generation, which begins with amplification of the spontaneous emission in the modes, and the phase of nonlinear transverse development, during which the giant light pulse proper is emitted. In ad dition, fo r a thorough inve stigation of the picture of development of the pulse as a whole the equations were numerically integrated. ' Subsequent experiments [26, 27] confirmed the occurrence of transverse development of the giant pulse, while recent experiments on nonlinear amplification [28] have shown the sig nificance of this effect in the propagation of the giant pulse in a nonlinear medium. A know ledge of the transverse development of the giant pulse would appear to be essential for the exact determination of the true strength of the light field in experiments on multi photon pro cesses [29]. The developed theory also leads to recommendations for the design of lasers to generate giant light pulses of minimum length and minimum divergence of emission.
