Download or read book Frequency Doubled Mode Locked Nd YAG Laser written by Arnold R. Clobes and published by . This book was released on 1972 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the work reported herein is to achieve stable mode-locked, second harmonic power output from a Nd:YAG laser. Particular emphasis is placed on amplitude stability and on conversion efficiency. The experimental results of this program are 200 mW of 0.53 micron mode-locked power output at a PRF of 500 MHz. The amplitude fluctuations are + or - 4%. The intracavity barium sodium niobate crystal, used as both the second harmonic generator and mode-lock modulator, was driven at 250 MHz. Stability control techniques successfully demonstrated include: (1) cladding of the laser rod; (2) amplitude equalization of the output pulse train; (3) maintaining the relative frequency difference between the modulator drive and the cavity c/2L frequency within narrow limits by use of a phase-lock loop; (4) series regulation of the lamp current and the use of ballast resistors; and (5) maintaining the nonlinear crystal at the phase-match temperature by closed-loop control of the oven temperature. Thermal effects in the banana crystal arising from absorption of the fundamental wavelength radiation were found to limit the amplitude stability of the laser output. The same effects distort the 0.53 micron far-field beam profile and reduce the conversion efficiency.
Download or read book Mode Locked Frequency Doubled Neodymium Laser written by J. H. Boyden and published by . This book was released on 1970 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Investigations were conducted in the areas of second harmonic generation and mode locking with CW neodymium:YAG Lasers. Demonstration of consistent and reproducible 100% conversion of the available CW power at 1.06 microns into 0.53 micron power was accomplished at a level of 2.1 watts in the TEM(oo) mode. A completely electronic closed loop automatically stabilized mode-locking system was developed, with capability of tracking plus or minus 1.5% variations in cavity length. Experimental and theoretical investigations of combined mode locking and intracavity second harmonic generation using a common Ba2NaNb5O15 crystal showed that there was a strong interaction between the processes, the nonlinear harmonic generation having a serious effect on mode-locking effectiveness. Thermal effects due to absorption in the nonlinear crystal were shown to have a significant effect on second harmonic generation. Correlation between theory and experiment was obtained. (Author).
Download or read book Frequency Doubled Neodymium Laser written by J. E. Murray and published by . This book was released on 1972 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of an experimental program designed to produce the maximum, stable second harmonic power from a mode-locked Nd:YAG laser using external second harmonic generation are reported. The laser was operated C.W. at the 2 to 3 watt level in a TEM transverse mode, and mode locked at 500 MHz. The major results were: Up to 400 mw of second harmonic power with a conversion efficiency of 15% was generated and demonstrated to be stable (less than 10% drift) over testing periods of 15 minutes or greater. A maximum of 550 mw of second harmonic was generated at 16% efficiency but at this level the system was stable for only a few minutes.
Download or read book Harmonic Mode Locking of the Nd YAG Laser written by Stanford University. Microwave Laboratory and published by . This book was released on 1972 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Fluorescence Spectroscopy written by Joseph R. Lakowicz and published by Springer Science & Business Media. This book was released on 2007-12-05 with total page 961 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of this established classic text reference builds upon the strengths of its very popular predecessors. Organized as a broadly useful textbook Principles of Fluorescence Spectroscopy, 3rd edition maintains its emphasis on basics, while updating the examples to include recent results from the scientific literature. The third edition includes new chapters on single molecule detection, fluorescence correlation spectroscopy, novel probes and radiative decay engineering. Includes a link to Springer Extras to download files reproducing all book artwork, for easy use in lecture slides. This is an essential volume for students, researchers, and industry professionals in biophysics, biochemistry, biotechnology, bioengineering, biology and medicine.
Download or read book Advanced Photonics with Second Order Optically Nonlinear Processes written by A.D. Boardman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although it took some time to establish the word, photonics is both widely accepted and used throughout the world and a major area of activity concerns nonlinear materials. In these the nonlinearity mainly arises from second-order or third-order nonlinear optical processes. A restriction is that second-order processes only occur in media that do not possess a centre of symmetry. Optical fibres, on the other hand, being made of silica glass, created by fusing SiO molecules, are made of material with a centre of z symmetry, so the bulk of all processes are governed by third-order nonlinearity. Indeed, optical fibre nonlinearities have been extensively studied for the last thirty years and can be truly hailed as a success story of nonlinear optics. In fact, the fabrication ofsuch fibres, and the exploitation oftheir nonlinearity, is in an advanced stage - not least being their capacity to sustain envelope solitons. What then ofsecond-order nonlinearity? This is also well-known for its connection to second-harmonic generation. It is an immediate concern, however, to understand how waves can mix and conserve both energy and momentum ofthe photons involved. The problem is that the wave vectors cannot be made to match without a great deal of effort, or at least some clever arrangement has to be made - a special geometry, or crystal arrangement. The whole business is called phase matching and an inspection ofthe state-of-the-art today, reveals the subject to be in an advanced state.
Download or read book Development of a Tunable Mode Locked Titanium Sapphire Laser written by and published by . This book was released on 1995 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project was to develop, fabricate, and deliver a computer controlled acoustooptically mode locked Titanium Sapphire laser for the Vision Biophysics Function of the Clinical Sciences Division of the USAF School of Aerospace Medicine (USAFSAM). The mode locking pulse rate was to be synchronized to the pulse rate of a Nd:YAG mode locked laser at the Vision Function. The frequency doubled output of the USAFSAM Nd:YAG laser is to serve as a pump for the Titanium Sapphire laser.
Download or read book Solid State Laser Engineering written by Walter Koechner and published by Springer. This book was released on 2007-11-06 with total page 765 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written from an industrial perspective this book discusses in detail the characteristics, design, construction, and performance of solid-state lasers. Emphasis is placed on engineering and practical considerations; phenomenological aspects using models are preferred to abstract mathematical derivations. Since its first edition almost 30 years ago this book has become the standard in the field of solid-state lasers for scientists, engineers and graduate students. This edition has been extensively revised and updated to account for recent developments in the areas of diode-laser pumping, laser materials and nonlinear crystals, and entire new sections have been added.
Download or read book Compact Blue Green Lasers written by William Paul Risk and published by Cambridge University Press. This book was released on 2003-01-09 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: William Risk, Timothy Gosnell and Arto Nurmikko have brought together their diverse expertise from industry and academia to write the first fully comprehensive book on the generation and application of blue-green lasers. This volume describes the theory and practical implementation of three techniques for the generation of blue-green light: nonlinear frequency conversion of infrared lasers, upconversion lasers, and wide bandgap semiconductor diode lasers. In addition, it looks at the various applications that have driven the development of compact sources of blue-green light, and reflects on the recent application of these lasers in high-density data storage, color displays, reprographics, and biomedical technology. Compact Blue-Green Lasers is suitable for graduate-level courses or as a reference for academics and professionals in optics, applied physics, and electrical engineering.
Download or read book Nd YAG Laser written by Dan C. Dumitras and published by BoD – Books on Demand. This book was released on 2012-03-09 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discovered almost fifty years ago at Bell Labs (1964), the Nd:YAG laser has undergone an enormous evolution in the years, being now widely used in both basic research and technological applications. Nd:YAG Laser covers a wide range of topics, from new systems (diode pumping, short pulse generation) and components (a new semiorganic nonlinear crystal) to applications in material processing (coating, welding, polishing, drilling, processing of metallic thin films), medicine (treatment, drug administration) and other various fields (semiconductor nanotechnology, plasma spectroscopy, laser induced breakdown spectroscopy).
Download or read book Laser Spectroscopy written by Wolfgang Demtröder and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 997 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keeping abreast of the latest techniques and applications, this new edition of the standard reference and graduate text on laser spectroscopy has been completely revised and expanded. While the general concept is unchanged, the new edition features a broad array of new material, e.g., frequency doubling in external cavities, reliable cw-parametric oscillators, tunable narrow-band UV sources, more sensitive detection techniques, tunable femtosecond and sub-femtosecond lasers (X-ray region and the attosecond range), control of atomic and molecular excitations, frequency combs able to synchronize independent femtosecond lasers, coherent matter waves, and still more applications in chemical analysis, medical diagnostics, and engineering.
Download or read book Photonics written by Ralf Menzel and published by Springer Science & Business Media. This book was released on 2013-04-18 with total page 895 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with the fundamental properties of photon and light beams, both experimentally and theoretically. It covers the essentials of linear interactions and most of the nonlinear interactions between light and matter in both the transparent and absorbing cases. About 4000 references open access to original literature.
Download or read book Picosecond Optoelectronic Devices written by Chi H. Lee and published by Elsevier. This book was released on 2012-12-02 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Picosecond Optoelectronic Devices reviews the major developments in the field of picosecond optoelectronics. This book discusses the picosecond pulse generation with semiconductor diode lasers; gigabit optical pulse generation in integrated lasers and applications; and picosecond photoconductors. The picosecond optoelectronic devices based on optically injected electron-hole plasma; pulse forming with optoelectronic switches; and high-power picosecond switching in bulk semiconductors are also elaborated. This text likewise discusses the sub-picosecond electrical sampling and applications; InP optoelectronic switches; and picosecond chronography. Other topics include the picosecond optical control of transferred-electron devices; optoelectronic switch for pulsed power; and responses of TEDs to picosecond optical pulses. This publication is a good source for electrical engineers and researchers conducting work on picosecond optoelectronics.
Download or read book Ultrashort Light Pulses written by S.L. Shapiro and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soon after the invention of the laser, a brand-new area of endeavour emerged after the discovery that powerful ultrashort (picosecond) light pulses could be extracted from some lasers. Chemists, physicists, and engineers quickly recognized that such pulses would allow direct temporal studies of extremely rapid phenomena requiring, however, development of revolutionary ultrafast optical and electronic devices. For basic research the development of picosecond pulses was highly important because experimentalists were now able to measure directly the motions of atoms and molecules in liquids and solids: by disrupting a material from equilibrium with an intense picosecond pulse and then recording the time of return to the equilibrium state by picosecond techniques. Studies of picosecond laser pulses-their generation and diagnostic tech niques-are still undergoing a fairly rapid expansion, but a critical review of the state of the art by experienced workers in the field may be a timely help to new experimentalists. We shall review the sophisticated tools developed in the last ten years, including the modelocked picosecond-pulse-emitting lasers, the picosecond detection techniques, and picosecond devices. Moreover, we shall outline the basic foundations for the study of rapid events in chemistry and physics, which have emerged after many interesting experiments and which are now being applied in biology. An in-depth coverage of various aspects of the picosecond field should be helpful to scientists and engineers alike.
Download or read book PHYSICAL METHODS INSTRUMENTS AND MEASUREMENTS Volume IV written by Yuri Mikhailovich Tsipenyuk and published by EOLSS Publications. This book was released on 2009-04-15 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical Methods, Instruments and Measurements theme is a component of the Encyclopedia of Physical Sciences, Engineering and Technology Resources which is part of the global Encyclopedia of Life Support Systems (EOLSS), an integrated compendium of twenty Encyclopedias. The Theme provides a complete survey of the present status of our knowledge of modern physical instruments and measurements. It is organized in the following main topics: Measurements and Measurement Standards; Sources of Particles and Radiation, Detectors and Sensors; Imaging and Characterizing – Trace Element Analysis; Technology of Physical Experiments; Applications of Measurements and Instrumentation which are then expanded into multiple subtopics, each as a chapter. These four volumes are aimed at the following five major target audiences: University and College Students, Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers and NGOs.
Download or read book The Science of Phototherapy An Introduction written by Leonard I. Grossweiner and published by Springer Science & Business Media. This book was released on 2005-08-11 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume emphasizes the science underlying the various phototherapy procedures, which encompasses aspects of classical and molecular photophysics, biological photochemistry, photobiology and biophotonics. Suitable as an introductory reference or textbook.
Download or read book Ultrafast Lasers written by Martin E. Fermann and published by CRC Press. This book was released on 2002-10-25 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering high-energy ultrafast amplifiers and solid-state, fiber, and diode lasers, this reference examines recent developments in high-speed laser technology. It presents a comprehensive survey of ultrafast laser technology, its applications, and future trends in various scientific and industrial areas. Topics include: micromachining applications for metals, dielectrics, and biological tissue; advanced electronics and semiconductor processing; optical coherence tomography; multiphoton microscopy; optical sampling and scanning; THz generation and imaging; optical communication systems; absolute phase control of optical signals; and more.
