Beam Quality Measurements For Materials Processing Lasers And The Proposed Iso Standard PDF Download
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Author | : |
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Total Pages | : 12 |
Release | : 1993 |
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Download Beam-quality Measurements for Materials Processing Lasers and the Proposed ISO Standard Book in PDF, ePub and Kindle
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.
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Publisher | : |
Total Pages | : 956 |
Release | : 1994 |
Genre | : Aeronautics |
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Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 484 |
Release | : 1994-02 |
Genre | : Power resources |
ISBN | : |
Download Energy Research Abstracts Book in PDF, ePub and Kindle
Author | : R. Setchi |
Publisher | : Lulu.com |
Total Pages | : 606 |
Release | : |
Genre | : |
ISBN | : 0956151663 |
Download Sustainable Design and Manufacturing 2014 Part 2 Book in PDF, ePub and Kindle
Author | : William Steen |
Publisher | : Springer Science & Business Media |
Total Pages | : 358 |
Release | : 2013-03-14 |
Genre | : Technology & Engineering |
ISBN | : 1447136098 |
Download Laser Material Processing Book in PDF, ePub and Kindle
Laser Material Processing (2nd ed) by William M Steen is an updated and expanded version of the original which sold very well with reprints in 1994 and 1996. This new edition includes a whole extra chapter - Rapid Prototyping and Low Volume Manufacture - and updates other sections such as those dealing with types of industrial lasers and new applications, and recent developments in Surface Treatment and In-Process Sensing. It comprises some addtional 60-80 pages whilst retaining the value of the original edition. It provides the reader with an understanding of laser process mechanisms, methods of application, automation and In-Process Sensing and industrial potential. The use of Patrick Wright's humorous cartoons and the many diagrams and tables to illustrate points make it a very useful and lively reference guide for students at all stages. Since laser technology is a rapidly changing field this new updated and expanded version will be particularly topical.
Author | : T. Sean Ross |
Publisher | : SPIE-International Society for Optical Engineering |
Total Pages | : 0 |
Release | : 2013 |
Genre | : Laser beams |
ISBN | : 9780819492975 |
Download Laser Beam Quality Metrics Book in PDF, ePub and Kindle
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.
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Total Pages | : 1746 |
Release | : 1994 |
Genre | : Government publications |
ISBN | : |
Download Government Reports Annual Index Book in PDF, ePub and Kindle
Author | : George K. Knopf |
Publisher | : CRC Press |
Total Pages | : 666 |
Release | : 2017-12-19 |
Genre | : Technology & Engineering |
ISBN | : 1439840547 |
Download Optical Nano and Micro Actuator Technology Book in PDF, ePub and Kindle
In Optical Nano and Micro Actuator Technology, leading engineers, material scientists, chemists, physicists, laser scientists, and manufacturing specialists offer an in-depth, wide-ranging look at the fundamental and unique characteristics of light-driven optical actuators. They discuss how light can initiate physical movement and control a variety of mechanisms that perform mechanical work at the micro- and nanoscale. The book begins with the scientific background necessary for understanding light-driven systems, discussing the nature of light and the interaction between light and NEMS/MEMS devices. It then covers innovative optical actuator technologies that have been developed for many applications. The book examines photoresponsive materials that enable the design of optically driven structures and mechanisms and describes specific light-driven technologies that permit the manipulation of micro- and nanoscale objects. It also explores applications in optofluidics, bioMEMS and biophotonics, medical device design, and micromachine control. Inspiring the next generation of scientists and engineers to advance light-driven technologies, this book gives readers a solid grounding in this emerging interdisciplinary area. It thoroughly explains the scientific language and fundamental principles, provides a holistic view of optical nano and micro actuator systems, and illustrates current and potential applications of light-driven systems.
Author | : Lindsay W. Austin |
Publisher | : |
Total Pages | : 410 |
Release | : 1995 |
Genre | : Science |
ISBN | : |
Download Beam Control, Diagnostics, Standards, and Propagation Book in PDF, ePub and Kindle
Author | : Alexis V. Kudryashov |
Publisher | : SPIE Press |
Total Pages | : 322 |
Release | : 1999 |
Genre | : Technology & Engineering |
ISBN | : 9780819433176 |
Download Laser Resonators Book in PDF, ePub and Kindle
The resonator can be considered the real heart of any laser system, the key element that determines the properties of laser radiation, including mode structure or temporal and spatial characteristics. The theory of different laser types has been well-developed in the last few decades of the 20th century, starting with the pioneering papers of Fox, Li, Body and Gordon. But today, due to the development of new types of lasers (fibre, diode), new optical elements (adaptive mirrors, phase conjugation techniques, graded phase correctors), the development of optical technology, and new needs for industrial lasers, novel types of resonators are under investigation.