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Topic: Nonlinear optics

	Nonlinear optics - Wikipedia, the free encyclopedia
		Nonlinear optics is the branch of optics that describes the behaviour of light in nonlinear media, that is, media in which the polarization P responds nonlinearly to the electric field E of the light.
		This nonlinearity is typically only observed at very high light intensities such as provided by pulsed lasers.
		In the language of nonlinear optics, the interacting beams result in a nonlinear polarization within the material, which coherently radiates to form the phase-conjugate wave.
	en.wikipedia.org /wiki/Nonlinear_optics (1987 words)

	Photonics Research Group
		Nonlinear optics has numerous applications in communications and optical computing, as nonlinear material effects allow for the design of switches, couplers, modulators, and all-optical signal processing systems.
		Nonlinear optics also has a number of inherent benefits, such as the ability to compensate for dispersion and diffraction effects, as evidenced by temporal and spatial solitons.
		The development of a suitable simulation tool for nonlinear optics is crucial if such effects and their applications are ever to be studied.
	www.ece.gatech.edu /research/photonics/nl_pc.html (526 words)

	MATERIALS SCIENCE: DISORDERED MATERIALS AND NONLINEAR OPTICS
		Lasers are capable of generating external fields of sufficient intensity for nonlinearity to occur, and the field of nonlinear optics has developed largely as a result of the invention of the laser.
		In general, in nonlinear optics, the induced electric polarization of the medium is not a linear function of the strength of the external electromagnetic radiation, which leads to phenomena more complicated than phenomena occurring in linear optics.
		In the 1990s, a new class of synthetic nonlinear optical multilayer structures was developed and commercialized that efficiently converted still weaker, fixed-frequency beams from small solid-state lasers to tunable visible and infrared radiation for applications in materials processing, remote sensing of environmentally sensitive gases, and interferometry (3).
	scienceweek.com /2004/sb041224-2.htm (1452 words)

	OPTICS AND NONLINEAR OPTICS OF LIQUID CRYSTALS
		This is a monograph/text devoted to a detailed treatment of the optical, electro-optical and nonlinear optical properties of all the mesophases of liquid crystals and related processes, phenomena and application principles.
		Quantitative data on material and optical parameters spanning the ultraviolet, visible, infrared as well as the microwave regimes are presented along with detailed theoretical treatments of basic liquid crystal physics, material properties and nonlinear optics.
		Numerous tables of hard-to-find liquid crystalline parameters, a self-contained chapter on general nonlinear optics, and comprehensive literature review are also included.
	www.worldscibooks.com /physics/1630.html (165 words)

	NONLINEAR OPTICS
		The vitality of Nonlinear Optics is evident from the still-growing number of scientists and engineers engaged in the study of new nonlinear phenomena and in the development of new nonlinear devices in the field of opto-electronics.
		The field of Nonlinear Optics today has grown into a vast enterprise with a considerable potential for technological applications.
		New nonlinear optical materials and devices are in various stages of development.
	www.worldscibooks.com /chaos/3046.html (228 words)

	Idaho National Laboratory - Physics
		Researchers are investigating the capabilities of linear elastic wave imaging and nonlinear ultrasonics, GHz acoustic microscope, nonlinear optics for sensing, electromagnetic and Superconducting Quantum Interference Device (SQUID) measurements for providing unique advancements in quantitative nondestructive evaluation of material microstructure.
		Nonlinear Ultrasonics — Researchers are investigating nonlinear acoustics as a tool for identifying material microstructure.
		Nonlinear Optics for Sensing — Researchers are using photorefractivity for dynamic holography and dynamic interferometric detection of ultrasonic motion.
	www.inl.gov /physics/nlo (548 words)

	Wiley::Nonlinear Optics
		Nonlinear Optics is a highly accessible, applications-oriented introduction to a new and rapidly growing field.
		Nonlinear Optics is a complete, self-contained, applications-oriented introduction to the field.
		Sauter treats the basic relations between polarization and electric field strength, the different nonlinear effects of polarizations of order two and three, wave propagation of complex phasors in nonlinear media and anisotropic media, and the conservation of energy and momentum in nonlinear processes.
	www.wiley.com /WileyCDA/WileyTitle/productCd-0471148601,descCd-description.html (435 words)

	Photonics Group (Prof. Dumitru Mihalache)
		Nonlinear Optics and Photonics Group is part of the Department of Theoretical Physics at The National Institute for Physics and Nuclear Engineering “Horia Hulubei”
		The possibility of tailoring, or even arresting, the collapse of wave packets in nonlinear optical media, whose dynamics is governed by nonlocal two-dimensional nonlinear Schroedinger-like equations.
		The key ingredient of the proposed scheme is the self-generation of nonlocal optical nonlinearities mediated by wave rectification (in collaboration with Dr. L.-C. Crasovan, Dr. J.
	www.theory.nipne.ro /NLO (720 words)

	NONLINEAR OPTICS
		Nonlinear Optics publishes primary papers reporting original research, review articles, and rapid communications.
		Principles covering studies into the fundamental theoretical understanding of the origins and mechanisms of nonlinear optical processes, such as squeezing, phase conjugation, and optical bistability, and theoretical calculations of susceptibilities either by band theory or by quantum mechanical theory.
		Phenomena devoted to papers on: the discovery of new nonlinear optical phenomena; measurement of nonlinear optical processes; determination of nonlinear optical constants and figures of merit; observation of ultrafast and fast nonlinear optical processes; and the characterization of nonlinear optical materials by new measurement methods.
	www.efluids.com /efluids/pages/j_midpages/nonlinear_optics.htm (189 words)

	Nonlinear optics of periodic and quasiperiodic structures (Site not responding. Last check: 2007-11-07)
		Till recent times most of the development in nonlinear optics of periodic and quasiperiodic media has been in the theory front, largely due to the lack of proper and comparatively cheap fabrication techniques.
		For a defocusing nonlinearity the gap shifts to the lower wavelengths because of decrease in the average refractive index, and at the same time a broadening of the gap occurs due to an increase in the refractive index contrast (assuming the nonlinear layers having lower index).
		The enhanced effective nonlinear susceptibility of the composite results as a consequence of the local field corrections and does not necessarily need some of the constituents to be metals.
	www.ias.ac.in /currsci/may25/articles17.htm (4674 words)

	Category:Nonlinear optics - Wikipedia, the free encyclopedia
		Nonlinear optics - here are subdisciplines of non-linear optics.
		The main article for this category is Nonlinear optics.
		There are 1 subcategories shown below (more may be shown on subsequent pages).
	en.wikipedia.org /wiki/Category:Nonlinear_optics (77 words)

	Valerio Lucarini - Nonlinear Optics
		My goal was discussing if in nonlinear optics it was possible to explicitely derive properties of the nonlinear susceptibilities such as Kramers-Kroenig relations and sum rules, which in linear Optics have played such a great role, having proved to be fundamental tools both in fundamental and applied research.
		This team has probably contributed the most to the theory of Nonlinear Kramers-Kroenig relations and sum rules by improving the general theoretical results, by introducing algorithms to perform the calculations in both conceptual and more realistic models, and by specifying the results to many real physical systems.
		Then we studied the case of the Pump and Probe nonlinear processes and together with the discussion of the range of validity of the results coming from the usual Kramers-Kroenig analysis we presented the contributions due to terms of the susceptibility that previous analyses had neglected and discussed its physical relevance.
	www.mit.edu /people/lucarini/www/optics.html (720 words)

	Applications of Nonlinear Fiber Optics (Site not responding. Last check: 2007-11-07)
		An attempt was made to include recent research results on all topics relevant to the field of nonlinear fiber optics.
		Nonlinear Fiber Optics, 3rd Edition, provides a comprehensive and up-to-date account of the nonlinear phenomena occurring inside optical fibers.
		This revised edition of Nonlinear Fiber Optics should serve well the needs of the scientific community including graduate students in Optics, Physics, and Electrical Engineering, engineers in the optical communication industry, and scientists working in fiber optics and nonlinear optics.
	www.optics.rochester.edu /users/gpa/fibopt.htm (337 words)

	USC Nonlinear Optics (Site not responding. Last check: 2007-11-07)
		He is using nonlinear optics to demonstrate a variety of new optical devices.
		He is also studying the origin of the photorefractive effect and is performing detailed experiments on the charge transport and identification of charge carriers in a variety of photorefractive materials.
		Hellwarth, inventor of the giant pulse (Q-switched) laser, co-discoverer of stimulated Raman scattering, and discoverer of the Raman-induced Kerr effect and laser-phase conjugation by degenerate four-wave mixing, is known internationally for his early and continuing contributions to laser physics.
	cwis.usc.edu /dept/physics/Brochure/NonlinearOptics.html (335 words)

	APPLIED PHYSICS: ON EXTREME NONLINEAR OPTICS
		The EUV is a difficult region of the spectrum for nonlinear optics because traditional frequency-conversion techniques generally rely on crystalline solids as the nonlinear medium, and solids are not transparent in the EUV.
		Nevertheless, good reasons are driving the development of new light sources in that spectral range: Short-wavelength light is ideal as a structural and chemical spectroscopic probe and as a tool for nanoscale lithography.
		Moreover, the physics of the process differs radically from traditional nonlinear optics because it is intimately linked to the attosecond time domain.
	scienceweek.com /2005/sw050722-6.htm (1524 words)

	Laser Focus World - Fiber-laser SHG yields broad bandwidth at high power
		Nonlinear effects limit conversion efficiency as input fundamental IR beam power at 1064 nm exceeds about 2.5 W. Because the efficiency of the nonlinear crystals is polarization-dependent, to generate an efficient and stable second harmonic the polarization state of the fiber laser has to be stable.
		In the case of PPLN, the polarization state has to be linear and the field has to be polarized along the z-axis of the PPLN in order to utilize the most efficient d33 coefficient of the PPLN.
		Using a highly nonlinear optical fiber, we have Stokes-shifted the fiber laser from 1120 to 1586 nm.
	lfw.pennnet.com /Articles/Article_Display.cfm?Section=Archives&Subsection=Display&ARTICLE_ID=136282 (1077 words)

	Physics News Update Number 407 - Story RELATIVISTIC NONLINEAR OPTICS (Site not responding. Last check: 2007-11-07)
		This "nonlinear Thomson scattering" causes the electrons to emit higher-frequency versions (harmonics) of the original laser light in a characteristic pattern.
		It was precisely the emission of harmonic light by intense light striking slow electrons bound to atoms (also at the University of Michigan) that helped to establish nonlinear optics in the early 1960's.
		Now the scattering of intense light from fast free electrons helps to establish an era of relativistic nonlinear optics, one goal being the generation of coherent x rays.
	www.aip.org /enews/physnews/1998/split/pnu407-1.htm (194 words)

	Nonlinear Optics (Site not responding. Last check: 2007-11-07)
		Nonlinear optics describes many interactions where the intensity of the optical wave changes the optical properties of a material.
		The University has a long history of world-leading research in nonlinear optics, dating back to Kerr's discovery of the electro-optic and magneto-optic effects in the 19th centuary.
		We have used this to demonstrate quasi-phase-matched second harmonic generation based on the modulation of the second-order coefficient and will be developing this theme towards integrated parametric amplifiers and sources.
	www.elec.gla.ac.uk /groups/opto/proj-nlo.html (249 words)

	R A Fisher Associates/Course: Nonlinear Optics
		As an option, examples can include fiber nonlinear optic phenomena such as spontaneous occurrence of second harmonic generation, cross-phase modulation, soliton concepts, fiber SBS, fiber pulse compression, and other fiber phenomena.
		Next, specific nonlinear optical effects will be studied in detail to illustrate specific points.
		The electrostrictive nonlinearity is described, and both stimulated and spontaneous aspects are reviewed, including the SBS gain coefficient, the concept of threshold, polarization issues, phase coherence issues, backward seeding, and the manipulation of expressions for the SBS frequency shift, the gain coefficient, and the threshold intensity.
	www.rafisher.com /nlo.htm (901 words)

	Amazon.com: Nonlinear Optics: Books: Nicolaas Bloembergen (Site not responding. Last check: 2007-11-07)
		The Principles of Nonlinear Optics (Wiley Classics Library) by Y.
		The Elements of Nonlinear Optics (Cambridge Studies in Modern Optics) by Paul N. Butcher
		Optical Coherence and Quantum Optics by Leonard Mandel
	www.amazon.com /exec/obidos/tg/detail/-/9810225997?v=glance (833 words)

	R A Fisher Associates/Course: Nonlinear Optics (Site not responding. Last check: 2007-11-07)
		It is our job in this course to demistify this daunting collection of seemingly unrelated effects by developing simple and clear explanations for how each works, and learning how each effect can be used for the modification, manipulation, or conversion of light pulses.
		The material presented will be useful to engineers, scientists, students and managers who need a fundamental understanding of fiber-optic communication related nonlinear optics.
		Robert A. Fisher is the owner of RA Fisher Associates, and has been active in laser physics and in nonlinear optics for the last 35 years.
	www.rafisher.com /fibers.htm (268 words)

	Ewan's homepage (Site not responding. Last check: 2007-11-07)
		Simulation of nonlinear optical measurements for the carrier-envelope phase of ultrashort pulses
		Nonlinear atom optics, with G. Lenz and P. Meystre, Phys.
		Dynamic nonlinear X-waves for femtosecond pulse propagation in water, with M. Kolesik and J. Moloney, Phys.
	www.opt-sci.arizona.edu /wright (555 words)

	ONO 2000 - Tutorial on Organic Nonlinear Optics
		Organic nonlinear optical materials are thought to play a key role in these technologies, and a lot of effort to develop new molecules/materials as well as fundamental understanding is under way throughout the world.
		The lectures are aimed at giving an introduction into the field of organic nonlinear optics for PhD students, postdocs and researchers entering the field.
		The course will offer the attendees the opportunity to strengthen their background in the field of organic nonlinear optics and will allow the experts of today to share some of their knowledge, experience, and ideas with the experts of tomorrow.
	www.icono5.ethz.ch /ono2000.html (339 words)

	Dispersive Nonlinear Geometric Optics - Donnat, Rauch (ResearchIndex) (Site not responding. Last check: 2007-11-07)
		Diffractive Nonlinear Geometric Optics With Rectification - Joly, Métivier, Rauch (1998)
		Donnat and J. Rauch, Dispersive nonlinear geometric optics, Jour.
		2 The origins of the nonlinear refractive indices of liquids a..
	citeseer.ist.psu.edu /146587.html (543 words)

	Amazon.com: Nonlinear Optics (Advanced Topics in the Interdisciplinary Mathematical Sciences): Books: Alan C. ... (Site not responding. Last check: 2007-11-07)
		This book is about nonlinear optics, the study of how high-intensity light propagates through and interacts with matter.
		It is a subject so scientifically rich and technologically promising that it is destined to become one of the most important areas of scientific research over the next quarter century.
		This book is written for graduate students and the newcomers to nonlinear optics, or anyone who wants to get a unified picture of the whole subject.
	www.amazon.com /exec/obidos/tg/detail/-/0201510146?v=glance (675 words)

	nonlinear optics laboratory (Site not responding. Last check: 2007-11-07)
		Welcome to the Nonlinear Optics Laboratory at the University of Dayton.
		The research goals of this lab are the development and application of new nonlinear optical sources.
		This involves three research areas, designing and fabricating nonlinear optical materials, building nonlinear optical frequency conversion devices, and applying these devices to spectroscopic measurements.
	www.udayton.edu /~physics/pep/nlo/nlo_home.htm (93 words)

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