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The Polarization Of A Laser
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Book Synopsis Orthogonal Polarization in Lasers by : Shulian Zhang
Download or read book Orthogonal Polarization in Lasers written by Shulian Zhang and published by John Wiley & Sons. This book was released on 2013-08-14 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lasers generally emit radiation, which is either simply linearly polarized or unpolarized and stochastically polarized. Contrary to these common lasers, all orthogonally polarized lasers simultaneously emit radiation in two linear polarization states, both exactly orthogonally oriented to each other. Due to this orthogonality, both polarized components in the beam are independent of each other to a high degree and the studies presented in this book make clear that this feature can give a strong advantage in certain laser applications, for instance in high-precision measurements. Orthogonal Polarization in Lasers: Physical Phenomena and Engineering Applications summarizes the basics and advanced research results of orthogonally polarized lasers, birefringence laser cavities, and their applications. The authors include a number of figures, experimental designs, and measurement curves to enable the reader to not only learn the basic principles and technologies but also to understand many applications in modern engineering and to start their own R&D projects. The book covers polarization effects, which are of fundamental importance across various disciplines of science and technology. Includes a number of figures, experimental designs, and measurement curves to help readers learn the basic principles and start their own R&D projects. Discusses many types of relevant lasers (helium/neon lasers, ND:YAG lasers, semiconductor lasers, laser diodes). Written by multiply-published authors in the subject area. Contains material useful for metrology applications. This book is intended for use by researchers, postgraduates, and engineers working in laser science, optics, and measurement and testing, while senior undergraduate students working in optical and laser science can use the book for advanced understanding in their field.
Book Synopsis The Polarization of a Laser by : Brett Thompson
Download or read book The Polarization of a Laser written by Brett Thompson and published by . This book was released on 1994 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polarization Dynamics of Mode-Locked Fiber Lasers by : Sergey V. Sergeyev
Download or read book Polarization Dynamics of Mode-Locked Fiber Lasers written by Sergey V. Sergeyev and published by CRC Press. This book was released on 2023-04-20 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of the latest research on the science, technology, and applications of mode-locked fiber lasers generating pulse trains with the evolving state of polarization at time scales ranging from a few pulse widths to 10,000 laser cavity round-trip times. It supports readers with a timely source of information on the current novel scientific concepts, and cost-effective schematics, in addition to an overview of the feasible applications. The book aims to demonstrate for the nonlinear science community a newly emerging field of nonlinear science, and so stimulates the development of new theoretical approaches and opens new horizons for the photonics community by pushing boundaries of the existing laser systems towards new applications. The new classes of optical sources and photonic devices explored in this book will be relevant with applications to other fields, including medicine, bio-photonics, metrology, and environmental safety. Key Features • Provides a cutting edge review of the latest emerging science, technology and applications in the field. • Tackles a topic with fast growing interest in USA, Europe and China. • Explores the simple and cheap design and tests of lasers, and outlines the feasible applications.
Book Synopsis The Measurement of the Polarization of a CO2 Laser Using a Stacked-plate Polarizer by : Ronnie Shepherd
Download or read book The Measurement of the Polarization of a CO2 Laser Using a Stacked-plate Polarizer written by Ronnie Shepherd and published by . This book was released on 1984 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Resonators and Beam Propagation by : Norman Hodgson
Download or read book Laser Resonators and Beam Propagation written by Norman Hodgson and published by Springer. This book was released on 2005-12-19 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Resonators provides a detailed discussion of the properties of optical resonators for lasers from basic theory to recent research. In addition to describing the fundamental theories of resonators such as geometrical optics, diffraction, and polarisation the characteristics of all important resonator schemes and their calculation are presented. Experimental examples, practical problems and a collection of measurement techniques support the comprehensive treatment of the subject. Optical Resonators is the only book currently available that provides a comprehensive overview of the the subject. Combined with the structure of the text and the autonomous nature of the chapters this work will be as suitable for those new to the field as it will be invaluable to specialists conducting research. This second edition has been enlarged by new sections on Q-switching and resonators with internal phase/amplitude control.
Book Synopsis Polarization of Light by : Serge Huard
Download or read book Polarization of Light written by Serge Huard and published by Wiley. This book was released on 1997-03-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the polarization of light is becoming increasingly important in the study of laser physics, nonlinear optics, and optical waveguides. This book covers the basics of polarized light representation, the propagation of light through anisotropic media, the mathematical formalism used, and induced anisotropy, devices which use induced or natural anisotropy and polarization phenomena in guided optics. Discusses both fundamentals and applications in a range of practical devices. Gives a global view of the state of polarization representation.
Book Synopsis Sharp Focusing of Laser Light by : Victor V. Kotlyar
Download or read book Sharp Focusing of Laser Light written by Victor V. Kotlyar and published by CRC Press. This book was released on 2019-10-28 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Readers will learn in which ways light can be "confined" within a subwavelength region smaller than half a wavelength. Strictly within the focal spot, all degrees of freedom of light interact and manifest themselves in a dramatic way. The size and shape of the focal spot and the magnitude of side-lobes depend on the polarization state alongside phase and amplitude distributions of a light beam. Readers will learn techniques in which inhomogeneously (i.e., azimuthally and radially) polarized optical beams can be focused. In sharp focus, exotic phenomena can occur, including the negative propagation of light and a toroidal optical flow. Throughout the book, the numerical simulation is performed using the rigorous solution of Maxwell’s equations based on a Finite-Difference Time-Domain (FDTD) approach, which makes the results of modeling highly reliable. The photonic components, including optical metasurfaces, discussed in the book have been implemented using state-of-the-art techniques of electron beam writing and reactive ion-beam etching of microrelief. Two chapters are concerned with photonics hot spots, which deal with the control of light by means of optical metasurfaces and the generation of an energy backflow in the region of sharp focus of a laser beam. Another hot topic is diffractive polarization converters implemented as subwavelength diffraction gratings to convert polarization of light. By way of illustration, such converters are shown to perform linear-to-radial or linear-to-azimuthal polarization conversion. The book describes advanced photonic components fabricated by the authors to perform sharp focusing of light, including binary zone plates, binary axicons, a planar photonic crystal lens, diffraction polarization converters, and metalenses. This book is a must-have for individuals and institutions studying cutting edge optics.
Book Synopsis POLARIZATION OF LASER RADIATION SCATTERED BY FOG AND SMOKE. by :
Download or read book POLARIZATION OF LASER RADIATION SCATTERED BY FOG AND SMOKE. written by and published by . This book was released on 1970 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Questions of atmospheric optics, the visibility of polarized radiation sources in the atmosphere, light conditions in the depth of the scattering medium illuminated by polarized radiation, and other matters are linked with the need to investigate the polarization characteristics of scattered light. The use of lasers with linear radiation polarization substantially increases the range of conditions in which the polarization characteristics of scattered light may be investigated. Experimental investigations of the degree of polarization of forward scattered and backward scattered (reflected) light during radiation discharge in artificial fog and smoke are given.
Book Synopsis Experiments with Laser by : Jeethendra Kumar P K
Download or read book Experiments with Laser written by Jeethendra Kumar P K and published by Notion Press. This book was released on 2018-04-09 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiments presented in this book use highly coherent and monochromatic laser sources along with state of the art digital instruments and associated software. These have resulted in faster and easier laboratory experimentation and, therefore, the book would hopefully serve as a laboratory guide for the student community. In this respect, this book on employing digital technology is quite different from other textbooks/reference manuals on the subject. The unique approach of experimentation adopted in this book is quite different from those mentioned in other practical textbooks or manuals available on the subject.
Book Synopsis Exploring Laser Light by : T. Kallard
Download or read book Exploring Laser Light written by T. Kallard and published by . This book was released on 1985 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Polarized Injection Laser Development by : Henry S Sommers (Jr)
Download or read book Polarized Injection Laser Development written by Henry S Sommers (Jr) and published by . This book was released on 1973 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is concerned with the successful development of room-temperature arrays of injection lasers with high polarization and with the study of the fundamental causes of polarization. Three types of multi-heterojunction wafers producing strong polarization are described. Arrays from the wafers have polarization ratios ranging from 90 to 98%. The profiles in the junction plane are nominally 20 deg, while in the transverse plane they depend on the internal structure and range from 30 to 80 deg. Tests of one of the arrays at elevated temperature showed good performance at 78 deg C ambient. A reflecting layer added to the reverse facet increased the differential efficiency of the forward beam without spoiling the polarization. Data on the device properties are presented for system analysis, as are recommendations for further device development and performance specification. The current dependence of polarization shows several types of behavior. For devices with low polarization, the ratio drops monotonicallly with drive from a high value near threshold to near unity at full power. This behavior is interpreted in terms of existing theory of the lasing state. The behavior of devices whose polarization ratio is independent of current or increases with drive, which is often the case with strongly polarized units, is not understood theoretically. A new result of technological significance is that lasers with sawed sidewalls have much lower TE polarization than similar lasers with stripe contacts. The polarization control by the lateral walls is very strong, the ratio varying with the nature of the walls by a factor of four. (Author).
Book Synopsis Polarization Optics in Telecommunications by : Jay N. Damask
Download or read book Polarization Optics in Telecommunications written by Jay N. Damask and published by Springer. This book was released on 2005-08-25 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: I have written this book to ?ll a void between theory and practice, a void that Iperceivedwhileconductingmyownresearchanddevelopmentofcomponents and instruments over the last ?ve years. In the chapters that follow I have pulled materials from the technical and patent literature that are relevant to the understanding and practice of polarization optics in telecommuni- tions, material that is often known by the respective experts in industry and academia but is rarely if ever found in one place. By bringing this material intoonemonograph,andbyapplyingasingleformalismthroughout,Ihopeto create a “base level” upon which future research and development can grow. Polarization optics in telecommunications is an ever-evolving ?eld. Each yearsigni?cantadvancementsaremade,punctuatedbyimportantdiscoveries. The references upon which this book is based are only a snap-shot in time. Areasthatremainunresolvedatthetimeofpublicationmayverywellbecl- i?ed in the years to come. Moreover, the focus of the ?eld changes in time: for instance, there have been few passive nonreciprocal component advancements reported in the last few years, but PMD and PDL advancement continues with only modest abatement.
Book Synopsis Optical Polarization in Biomedical Applications by : Valery V. Tuchin
Download or read book Optical Polarization in Biomedical Applications written by Valery V. Tuchin and published by Springer Science & Business Media. This book was released on 2006-10-12 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Polarization in Biomedical Applications introduces key developments in optical polarization methods for quantitative studies of tissues, while presenting the theory of polarization transfer in a random medium as a basis for the quantitative description of polarized light interaction with tissues. This theory uses the modified transfer equation for Stokes parameters and predicts the polarization structure of multiple scattered optical fields. The backscattering polarization matrices (Jones matrix and Mueller matrix) important for noninvasive medical diagnostic are introduced. The text also describes a number of diagnostic techniques such as CW polarization imaging and spectroscopy, polarization microscopy and cytometry. As a new tool for medical diagnosis, optical coherent polarization tomography is analyzed. The monograph also covers a range of biomedical applications, among them cataract and glaucoma diagnostics, glucose sensing, and the detection of bacteria.
Book Synopsis Introduction to the Theory of Coherence and Polarization of Light by : Emil Wolf
Download or read book Introduction to the Theory of Coherence and Polarization of Light written by Emil Wolf and published by Cambridge University Press. This book was released on 2007-10-11 with total page 237 pages. Available in PDF, EPUB and Kindle. Book excerpt: All optical fields undergo random fluctuations. They may be small, as in the output of many lasers, or they may be appreciably larger, as in light generated by thermal sources. The underlying theory of fluctuating optical fields is known as coherence theory. An important manifestation of the fluctuations is the phenomenon of partial polarization. Actually, coherence theory deals with considerably more than fluctuations. Unlike usual treatments, it describes optical fields in terms of observable quantities and elucidates how such quantities, for example, the spectrum of light, change as light propagates. This book is the first to provide a unified treatment of the phenomena of coherence and polarization. The unification has been made possible by very recent discoveries, largely due to the author of this book. The subjects treated in this volume are of considerable importance for graduate students and for research workers in physics and in engineering, who are concerned with optical communications, with propagation of laser beams through fibers and through the turbulent atmosphere, with optical image formation, particularly in microscopes, and with medical diagnostics, for example. Each chapter contains problems to aid self-study. Book jacket.
Book Synopsis Development of a Method to Measure the Polarization of Laser-accelerated Proton by : Natascha Raab
Download or read book Development of a Method to Measure the Polarization of Laser-accelerated Proton written by Natascha Raab and published by . This book was released on 2011 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Polarization and Reflectance Characterization of Selected Target and Background Material by : Hollis H. Bennett
Download or read book Laser Polarization and Reflectance Characterization of Selected Target and Background Material written by Hollis H. Bennett and published by . This book was released on 2006 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Polarization Control for Optimizing Ultrafast Laser Micro-processing by : Olivier Allegre
Download or read book Advanced Polarization Control for Optimizing Ultrafast Laser Micro-processing written by Olivier Allegre and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to control and manipulate the state of polarization of a laser beam is becoming an increasingly desirable feature in a number of industrial laser micro-processing applications. Being able to control polarization would enable the improvement of the efficiency and quality of processes such as the drilling of holes for fuel-injection nozzles, the processing of silicon wafers or the machining of medical stent devices. This thesis presents novel, liquid-crystal-based optical setups for controlling the polarization of ultrafast laser beams, and demonstrates how such optical setups can be used to improve laser micro-processing efficiency and quality. Two experimental strategies were followed: the first used dynamic control of the polarization direction of a linearly polarized beam; the second generated beams with complex polarization structures. Novel optical analysis methods were used to map the polarization structures in the focal region of these laser micro-processing setups, using Laser Induced Periodic Surface Structures (LIPSS) produced on stainless steel sample surfaces at low laser fluence (around 1.5J/cm2), close to the ablation threshold of steel (i.e. 0.16J/cm2). This helped to characterize and calibrate the optical setups used in this thesis. The first experimental method used a fast-response, analogue, liquid-crystal polarization rotation device to dynamically control the direction of linear polarization of a laser beam during micro-processing. Thanks to its flexibility, the polarization rotator could be set-up in various synchronized configurations, for example keeping the polarization direction constantly perpendicular to the beam scanning motion. Drilling and cutting tests were performed on thin (~0.4mm thick) stainless steel sheets using a 775nm femtosecond laser at 24J/cm2. The experimental results showed a consistent improvement in the micro-processing quality when the polarization direction was synchronized with the beam scanning motion. The sidewall surface roughness and edge quality of the machined structures were improved significantly, with the dimensions of ripples and distortions divided by a factor of two. The overall processing efficiency was also increased compared to that produced by linear or circular polarizations. The second experimental method used a digital, Liquid-Crystal On Silicon (LCOS) Spatial Light Modulator (SLM) to generate polarization structures with a cylindrical geometry, or Cylindrical Vector Beams (CVBs). A Jones matrix analysis was used to model the optical setup and predict the ability to produce CVBs in this way. The setup was implemented in a 775nm femtosecond laser micro-processing bench and the resulting polarization analyzed with a polarizing filter, demonstrating a polarization purity better than 84%. The amplitude and polarization properties in the focal region of the setup were studied using LIPSS produced on the surface of stainless steel samples at low fluence (1.5J/cm2), to check that the expected state of polarization had been achieved. An analytical model of the experimental setup was developed to explain the experimental results. The model predictions were in agreement with the experimental results and clarified how the polarization and phase structures affect the focal properties of the produced laser beams. Various types of CVBs were used with a high laser beam fluence (24J/cm2) for micro-machining 0.2-0.4mm thick stainless steel plates. A comparative analysis of micro-machining with radially, azimuthally, circularly and linearly polarized beams was carried out. It was shown that a radially polarized beam was more efficient at drilling and cutting high-aspect-ratio features when the plate thickness was above 0.2mm. The gain in processing speed was better than 5% compared with a circularly polarized beam and better than 10% compared with an azimuthally polarized beam, under the chosen processing parameters. However the processing speed was similar for all these polarization states (radial, azimuthal and circular) when machining 0.2mm thick plates. It was also shown that a radially polarized beam improved the processing quality, reducing the distortions affecting the edge quality of the machined structures.
