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Laser Beam Quality Metrics
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Author :T. Sean Ross Publisher :SPIE-International Society for Optical Engineering ISBN 13 :9780819492975 Total Pages :0 pages Book Rating :4.4/5 (929 download)
Book Synopsis Laser Beam Quality Metrics by : T. Sean Ross
Download or read book Laser Beam Quality Metrics written by T. Sean Ross and published by SPIE-International Society for Optical Engineering. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is geared toward engineers and laser physicists involved in the development of laser-based systems, especially laser systems for directed energy applications. It begins with a review of basic laser properties and moves to definitions and implications of the various standard beam quality metrics such as M2, power in the bucket, brightness, beam parameter product, and Strehl ratio. The practical aspects of beam metrology, which have not been sufficiently addressed in the literature, are amply covered here. For those who are only interested in measuring Gaussian beams from commercial lasers, a reading of Chapter 1, Chapter 2 "What Your Laser Beam Analyzer Manual Didn't Tell You," and the first three sections of Chapter 6 "Cautionary Tales" will be sufficient. For those working in more off-the-map fields such as unique lasers, unstable resonators, multikilowatt lasers, MOPAs, or requirements generation and development, a reading of the entire text is recommended.
Book Synopsis Appropriate Measures and Consistent Standard for High Energy Laser Beam Quality (Postprint). by :
Download or read book Appropriate Measures and Consistent Standard for High Energy Laser Beam Quality (Postprint). written by and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Along with power output of the laser system, laser optical quality or beam quality provides a suitable measure of performance. Power and beam quality are standards for the comparison of laser systems with each other and against mission requirements. An understanding of the meaning of beam quality is necessary to completely define laser performance capability. The current state of our community includes a multitude of different and not well understood beam quality measures, M (exp 2), Strehl Ratio, brightness, power in the bucket, "times diffraction limited" and mode content determined by a variety of beam radius measures: half-widths, second-moment radius, widths at 1/e or 1/e (exp 2) points, width of primary lobe, etc. Another complication is that different elements of the community use different measures to evaluate optical quality characteristics. We examine the assumptions behind common measures of beam quality and compare the various measures as they relate to beams from laser employing stable resonant optical cavities. We show how the mode composition of a beam depends on prior determination of beam radius and how the term "times diffraction limited"can mean different things depending on the method used to measure beam radius. We show the ambiguities that arise between certain classes of beams and measures of beam quality and advocate for a laser beam quality standard that relates directly to mission requirements.
Book Synopsis Beam-quality Measurements for Materials Processing Lasers and the Proposed ISO Standard by :
Download or read book Beam-quality Measurements for Materials Processing Lasers and the Proposed ISO Standard written by and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser beam-quality can indicate the maximum power density that can be obtained with a specific laser and serves as a figure-of-merit when comparing lasers, calibrating lasers, and in assessing a laser's operating condition. Measurements of laser beam-quality for a 1000 watt continuous wave CO2 laser and a 400 watt pulsed Nd:YAG laser have been completed. These measurements were made with two different type instruments: (1) a specially constructed apparatus that uses an integrating sphere and diamond apertures and (2) a commercially available instrument that incorporates a scanning and spinning hollow needle. Laser beam-quality and the propagation constants have been determined using a non-linear curve-fitting technique and the new proposed ISO standard for measuring laser beam-quality. The curve fitting analysis and the ISO analysis were found to produce approximately the same values for beam-quality and the propagation constants. However, a comparison of the experimental procedures required with the two techniques showed significant differences. The utility of the ISO technique was limited by it's experimental procedural restrictions. The importance of spherical aberration in distorting laser beam-quality measurements and in limiting the application of beam-quality to laser spotsize prediction is also detailed.
Book Synopsis Measurement of the Laser Beam Quality Using Knife-edge Method by : Wen Ji-Hua
Download or read book Measurement of the Laser Beam Quality Using Knife-edge Method written by Wen Ji-Hua and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Transverse Laser Beam Quality Measurement Methods by :
Download or read book Comparison of Transverse Laser Beam Quality Measurement Methods written by and published by . This book was released on 2014 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Nd: YAG Laser Beam Quality by : Nurhalawa Md Yusof
Download or read book Measurement of Nd: YAG Laser Beam Quality written by Nurhalawa Md Yusof and published by . This book was released on 2008 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Metrics for High-quality Specular Surfaces by : Lionel R. Baker
Download or read book Metrics for High-quality Specular Surfaces written by Lionel R. Baker and published by SPIE Press. This book was released on 2004 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book supplies the optical component and systems designer, and quality assurance engineers and managers with the definitions, measurement principles, and standard metrics used to characterize high-quality specular surfaces. The author covers both the traditional visual methods as well as newer (but not necessarily better) computer-aided techniques and describes the metrics adopted by the new ISO standards, including the setting of form and finish tolerances. Key issues of industry are raised, to help stimulate research and development of new methods and standards that blend the best of the old and new approaches to surface assessment.
Book Synopsis Measurement of Pulsed-laser Power by : Matt Young
Download or read book Measurement of Pulsed-laser Power written by Matt Young and published by . This book was released on 1979 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Beam Quality Measurement in High Powered, Femtosecond Pulsed Lasers by : Fenghe Zhong
Download or read book Beam Quality Measurement in High Powered, Femtosecond Pulsed Lasers written by Fenghe Zhong and published by . This book was released on 2017 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technisches Freihandzeichnen by : Ulrich Viebahn
Download or read book Technisches Freihandzeichnen written by Ulrich Viebahn and published by . This book was released on 1993 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Power Laser Handbook by : Hagop Injeyan
Download or read book High Power Laser Handbook written by Hagop Injeyan and published by McGraw Hill Professional. This book was released on 2011-01-05 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: The State of the Art in High-Power Laser Technology Filled with full-color images, High-Power Laser Handbook offers comprehensive details on the latest advances in high-power laser development and applications. Performance parameters for each major class of lasers are described. The book covers high-power gas, chemical, and free-electron lasers and then discusses semiconductor diode lasers, along with the associated technologies of packaging, reliability, and beam shaping and delivery. Current research and development in solid-state lasers is described as well as scaling approaches for high CW powers, high pulse energies, and high peak powers. This authoritative work also addresses the emergence of fiber lasers and concludes by reviewing various methods for beam combining. Coverage Includes: Carbon dioxide lasers Excimer lasers Chemical lasers High-power free-electron lasers Semiconductor laser diodes High-power diode laser arrays Introduction to high-power solid-state lasers Zig-zag slab lasers ThinZag high-power laser development Thin disk lasers Heat capacity lasers Ultrafast solid-state lasers Ultrafast lasers in the thin disk geometry The National Ignition Facility laser Optical fiber lasers Pulsed fiber lasers High-power ultrafast fiber laser systems High-power fiber lasers for industry and defense Beam combining
Book Synopsis Laser Beam Profile Measurements Using Spatial Sampling, Fourier Optics, and Holography by : Eric Gunnar Johnson
Download or read book Laser Beam Profile Measurements Using Spatial Sampling, Fourier Optics, and Holography written by Eric Gunnar Johnson and published by . This book was released on 1979 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Optoelectronic Device Modeling and Simulation by : Joachim Piprek
Download or read book Handbook of Optoelectronic Device Modeling and Simulation written by Joachim Piprek and published by CRC Press. This book was released on 2017-10-12 with total page 887 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive survey of fundamental concepts and methods for optoelectronic device modeling and simulation. Gives a broad overview of concepts with concise explanations illustrated by real results. Compares different levels of modeling, from simple analytical models to complex numerical models. Discusses practical methods of model validation. Includes an overview of numerical techniques.
Book Synopsis Coherent Laser Beam Combining by : Arnaud Brignon
Download or read book Coherent Laser Beam Combining written by Arnaud Brignon and published by John Wiley & Sons. This book was released on 2013-11-13 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser beam combining techniques allow increasing the power of lasers far beyond what it is possible to obtain from a single conventional laser.One step further, coherent beam combining (CBC) also helps to maintain the very unique properties of the laser emission with respect to its spectral and spatial properties. Such lasers are of major interest for many applications, including industrial, environmental, defense, and scientific applications. Recently, significant progress has beenmade in coherent beam combining lasers, with a total output power of 100 kW already achieved. Scaling analysis indicates that further increase of output power with excellent beam quality is feasible by using existing state-of-the-art lasers. Thus, the knowledge of coherent beam combining techniques will become crucial for the design of next-generation highpower lasers. The purpose of this book is to present the more recent concepts of coherent beam combining by world leader teams in the field.
Book Synopsis Laser Beam Divergence Measurements Techniques Comparison by : G10T Laser Safety Hazards Committee
Download or read book Laser Beam Divergence Measurements Techniques Comparison written by G10T Laser Safety Hazards Committee and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document sets forth several acceptable methods of laser beam divergence measurement techniques. ARP5290 has been reaffirmed to comply with the SAE five-year review policy.
Book Synopsis Laser Welding Beam Quality Calibration by :
Download or read book Laser Welding Beam Quality Calibration written by and published by . This book was released on 1997 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relationship of beam quality and weld depth of penetration was studied to attempt to better quantify the operation of CO2 laser beam welders. Equipment to measure laser beam quality was obtained. The equipment was calibrated using standard apertures. To relate weld penetration and beam quality measurements, it was necessary to force changes in the CO2 laser welder's operation. The chosen experimental variables were laser gas mixture and the use of a group of focusing lenses that had been used in production.
Book Synopsis Lasers and Laser-Related Equipment. Test Methods for Laser Beam Parameters. Beam Positional Stability by : British Standards Institute Staff
Download or read book Lasers and Laser-Related Equipment. Test Methods for Laser Beam Parameters. Beam Positional Stability written by British Standards Institute Staff and published by . This book was released on 2003-04-25 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lasers, Optical instruments, Optical measurement, Position, Stability, Testing conditions
