New Class Of Cw High Power Diode Pumped Alkali Lasers Dpals

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New Class of CW High-Power Diode-Pumped Alkali Lasers (DPALs).

Author : S. A. Payne
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (316 download)

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Book Synopsis New Class of CW High-Power Diode-Pumped Alkali Lasers (DPALs). by : S. A. Payne

Download or read book New Class of CW High-Power Diode-Pumped Alkali Lasers (DPALs). written by S. A. Payne and published by . This book was released on 2004 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new class of diode-pumped alkali vapor lasers (DPALs) offers high efficiency cw laser radiation at near-infrared wavelengths: cesium 895 nm, rubidium 795 nm, and potassium 770 nm. The working physical principles of DPALs will be presented. Initial 795 nm Rb and 895 nm Cs laser experiments performed using a titanium sapphire laser as a surrogate pump source demonstrated DPAL slope power conversion efficiencies in the 50-70% range, in excellent agreement with device models utilizing only literature spectroscopic and kinetic data. Using these benchmarked models for Rb and Cs, optimized DPALs with optical-optical efficiencies>60%, and electrical efficiencies of 25-30% are projected. DPAL device architectures for near-diffraction-limited power scaling into the high kilowatt power regime from a single aperture will be described. DPAL wavelengths of operation offer ideal matches to silicon and gallium arsenide based photovoltaic power conversion cells for efficient power beaming.

High-power Laser Ablation

Author :
Publisher :
ISBN 13 :
Total Pages : 720 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis High-power Laser Ablation by :

Download or read book High-power Laser Ablation written by and published by . This book was released on 2004 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Laser Technology and Applications

Author : Chunlei Guo
Publisher : CRC Press
ISBN 13 : 1000296520
Total Pages : 711 pages
Book Rating : 4.0/5 (2 download)

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Book Synopsis Handbook of Laser Technology and Applications by : Chunlei Guo

Download or read book Handbook of Laser Technology and Applications written by Chunlei Guo and published by CRC Press. This book was released on 2021-06-23 with total page 711 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive handbook gives a fully updated guide to lasers and laser systems, including the complete range of their technical applications. The first volume outlines the fundamental components of lasers, their properties and working principles. The second volume gives exhaustive coverage of all major categories of lasers, from solid-state and semiconductor diode to fiber, waveguide, gas, chemical, and dye lasers. The third volume covers modern applications in engineering and technology, including all new and updated case studies spanning telecommunications and data storage to medicine, optical measurement, defense and security, nanomaterials processing and characterization.

DPAL

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (682 download)

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Book Synopsis DPAL by :

Download or read book DPAL written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The new class of diode pumped alkali vapor lasers (DPALs) offers high efficiency cw laser beams at wavelengths which efficiently couple to photovoltaic (PV) cells: silicon cells at 895 nm (cesium), and GaAs cells at 795 nm (rubidium) and at 770 nm (potassium). DPAL electrical efficiencies of 25-30% are projected, enabling PV cell efficiencies (almost equal to)40% (Si) and (almost equal to)60% (GaAs). Near-diffraction-limited DPAL device power scaling into the multi-kilowatt regime from a single aperture is projected.

High Power Diode Lasers

Author : Friedrich Bachmann
Publisher : Springer
ISBN 13 : 0387347291
Total Pages : 553 pages
Book Rating : 4.3/5 (873 download)

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Book Synopsis High Power Diode Lasers by : Friedrich Bachmann

Download or read book High Power Diode Lasers written by Friedrich Bachmann and published by Springer. This book was released on 2007-05-26 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes a five year research project, as well as subsequent results regarding high power diode laser systems and their application in materials processing. The text explores the entire chain of technology, from the semiconductor technology, through cooling mounting and assembly, beam shaping and system technology, to applications in the processing of such materials as metals and polymers. Includes theoretical models, a range of important parameters and practical tips.

Diode Pumped Alkali Vapor Lasers - A New Pathway to High Beam Quality at High Average Power

Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (682 download)

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Book Synopsis Diode Pumped Alkali Vapor Lasers - A New Pathway to High Beam Quality at High Average Power by :

Download or read book Diode Pumped Alkali Vapor Lasers - A New Pathway to High Beam Quality at High Average Power written by and published by . This book was released on 2005 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resonance-transition alkali-vapor lasers have only recently been demonstrated [1] but are already attracting considerable attention. Alkali-atom-vapor gain media are among the simplest possible systems known, so there is much laboratory data upon which to base performance predictions. Therefore, accurate modeling is possible, as shown by the zero- free-parameter fits [2] to experimental data on alkali-vapor lasers pumped with Ti:sapphire lasers. The practical advantages of two of the alkali systems--Rb and Cs--are enormous, since they are amenable to diode-pumping [3,4]. Even without circulating the gas mixture, these lasers can have adequate cooling built-in owing to the presence of He in their vapor cells. The high predicted (up to 70%) optical-to-optical efficiency of the alkali laser, the superb (potentially 70% or better) wall-plug efficiency of the diode pumps, and the ability to exhaust heat at high temperature (100 C) combine to give a power-scalable architecture that is lightweight. A recent design exercise [5] at LLNL estimated that the system ''weight-to-power ratio'' figure of merit could be on the order of 7 kg/kW, an unprecedented value for a laser of the 100 kW class. Beam quality is expected to be excellent, owing to the small dn/dT value of the gain medium. There is obviously a long way to go, to get from a small laser pumped with a Ti:sapphire or injection-seeded diode system (of near-perfect beam quality, and narrow linewidth) [1, 4] to a large system pumped with broadband, multimode diode- laser arrays. We have a vision for this technology-development program, and have already built diode-array-pumped Rb lasers at the 1 Watt level. A setup for demonstrating Diode-array-Pumped Alkali vapor Lasers (DPALs) is shown in Figure 1. In general, use of a highly-multimode, broadband pump source renders diode-array-based experiments much more difficult than the previous ones done with Ti:sapphire pumping. High-NA optics, short focal distances, and short vapor cells are needed.

The Yaws Handbook of Vapor Pressure

Author : Carl L. Yaws
Publisher : Gulf Professional Publishing
ISBN 13 : 012803002X
Total Pages : 336 pages
Book Rating : 4.1/5 (28 download)

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Book Synopsis The Yaws Handbook of Vapor Pressure by : Carl L. Yaws

Download or read book The Yaws Handbook of Vapor Pressure written by Carl L. Yaws and published by Gulf Professional Publishing. This book was released on 2015-03-12 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increased to include over 25,000 organic and inorganic compounds, The Yaws Handbook of Vapor Pressure: Antoine Coefficients, Second Edition delivers the most comprehensive and practical database source for today's petrochemical. Understanding antoine coefficients for vapor pressure leads to numerous critical engineering applications such as pure components in storage vessels, pressure relief valve design, flammability limits at the refinery, as well as environmental emissions from exposed liquids, making data to efficiently calculate these daily challenges a fundamental need. Written by the world's leading authority on chemical and petrochemical data, The Yaws Handbook of Vapor Pressure simplifies the guesswork for the engineer and reinforces the credibility of the engineer's calculations with a single trust-worthy source. This data book is a must-have for the engineer's library bookshelf. - Increase compound coverage from 8,200 to over 25,000 organic and inorganic compounds, including sulfur and hydrocarbons - Solve process design questions quickly from a single reliable data source - Locate answers easily for multiple petrochemical related questions such as bubble point, dew point temperatures, and vapor-liquid equilibrium

The Laser Guidebook

Author : Jeff Hecht
Publisher : Tab Books
ISBN 13 : 9780830642748
Total Pages : 498 pages
Book Rating : 4.6/5 (427 download)

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Book Synopsis The Laser Guidebook by : Jeff Hecht

Download or read book The Laser Guidebook written by Jeff Hecht and published by Tab Books. This book was released on 1992 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: New edition of a reference and tutorial introduction to the practical aspects of lasers--the functional characteristics vital to those who work with them. A few chapters describe basic principles; subsequent chapters are devoted to the various kinds of lasers, e.g. helium-neon, noble gas, helium-cadmium, carbon dioxide, chemical, copper and gold vapor, excimer, nitrogen, and others. Annotation copyright by Book News, Inc., Portland, OR

Effects of High-Power Laser Radiation

Author : John Ready
Publisher : Elsevier
ISBN 13 : 032314991X
Total Pages : 448 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Effects of High-Power Laser Radiation by : John Ready

Download or read book Effects of High-Power Laser Radiation written by John Ready and published by Elsevier. This book was released on 2012-12-02 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effects of High-Power Laser Radiation describes the interactions between high-power laser beams and matter. This book is divided into eight chapters that particularly focus on interactions such as heating, melting, vaporization, and plasma production. The opening chapters examine the laser properties, types, measurement techniques, and safety aspects. The succeeding chapters deal with a variety of physical phenomena and mechanisms of laser-induced particle emission, as well as the initiation and development of gas breakdown phenomena. Other chapters explore the effects and damage of various interactions in transparent materials and on biological systems. The final chapter looks into the practical applications of the various laser effects to diverse technological fields. This book will prove useful to scientists interested in the physical phenomena of laser effects and engineers interested in practical applications of laser effects.

A Modular Control Platform for a Diode Pumped Alkali Laser

Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (713 download)

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Book Synopsis A Modular Control Platform for a Diode Pumped Alkali Laser by :

Download or read book A Modular Control Platform for a Diode Pumped Alkali Laser written by and published by . This book was released on 2008 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the difficulties of creating compact, high power laser systems can be overcome if the heat dissipating properties of chemical lasers can be combined with the efficiency of diode lasers. Recently, the novel idea of using solid state diode lasers to pump gaseous gain media, such as is done in diode pumped alkali lasers (DPALs), has been proposed and early experiments have shown promising results. However, a number of technical issues need to be overcome to realize high output power from these lasers. In order to achieve higher power, the efficiency of coupling between pump laser energy and the chemical cell must be increased, and eventually multiple high power diode pumps must be combined and synchronized so that their energy can pump the chemical cell. Additionally, an inter-cavity adaptive optics system may be a requirement to be able to propagate these lasers with high efficiency. DPAL systems are complex and require a significant amount of data fusion and active feedback to control and optimize their performance. There are a wide range of components including pump lasers, gain cells and monitoring points needed to study and refine the overall laser system. In support of this dynamic development environment, we have developed a hardware framework using commercial off the shelf (COTS) components which supports the rapid assembly of functional system blocks into a cohesive integrated system. Critical to this system are a simple communication protocol, industry standard communication pipes (USB, Bluetooth, etc), and flexible high level scripting. Simplifying the integration process has the benefit of allowing flexible "on the fly" modifications to adapt the system as needed and enhance available functionality. The modular nature of the architecture allows scalability and adaptability as more pieces are added to the system.

Spectral Line Broadening by Plasmas

Author : Hans Griem
Publisher : Elsevier
ISBN 13 : 0323150942
Total Pages : 425 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Spectral Line Broadening by Plasmas by : Hans Griem

Download or read book Spectral Line Broadening by Plasmas written by Hans Griem and published by Elsevier. This book was released on 2012-12-02 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectral Line Broadening by Plasmas deals with spectral line broadening by plasmas and covers topics ranging from quasi-static approximation and impact approximation to intermediate approximations and correlation effects. Experimental results for hydrogen lines, lines with forbidden components, and ionized helium lines are presented. Applications such as density and temperature measurements are also considered. Comprised of four chapters, this volume begins with an overview of the effects of electric fields from electrons and ions (both acting as point charges) on spectral line shapes. The next chapter surveys theoretical work, paying particular attention to quasi-static, impact, and intermediate approximations as well as correlation effects. Stark broadening experiments are then discussed, with special emphasis on experiments capable of checking the accuracy or validity limits of the various approximations. The final chapter is devoted to applications in laboratory plasma physics and astronomy, focusing on density and temperature measurements and opacity calculations as well as the analysis of stellar atmospheres, amplitudes and spectra of plasma waves, and radio frequency lines. This book should appeal to students, practitioners, and researchers in pure and applied physics.

Tunable Laser Diodes

Author : Markus-Christian Amann
Publisher : Artech House Optoelectronics L
ISBN 13 : 9780890069639
Total Pages : 0 pages
Book Rating : 4.0/5 (696 download)

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Book Synopsis Tunable Laser Diodes by : Markus-Christian Amann

Download or read book Tunable Laser Diodes written by Markus-Christian Amann and published by Artech House Optoelectronics L. This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference discusses the underlying physics, operational principles, and performance and applications of tunable laser diodes. The book is supplemented with practical examples and helpful notations.

Mid-infrared Optoelectronics

Author : Eric Tournié
Publisher : Woodhead Publishing
ISBN 13 : 0081027389
Total Pages : 754 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Mid-infrared Optoelectronics by : Eric Tournié

Download or read book Mid-infrared Optoelectronics written by Eric Tournié and published by Woodhead Publishing. This book was released on 2019-10-19 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mid-infrared Optoelectronics: Materials, Devices, and Applications addresses the new materials, devices and applications that have emerged over the last decade, along with exciting areas of research. Sections cover fundamentals, light sources, photodetectors, new approaches, and the application of mid-IR devices, with sections discussing LEDs, laser diodes, and quantum cascade lasers, mid-infrared optoelectronics, emerging research areas, dilute bismide and nitride alloys, Group-IV materials, gallium nitride heterostructures, and new nonlinear materials. Finally, the most relevant applications of mid-infrared devices are reviewed in industry, gas sensing, spectroscopy, and imaging. This book presents a key reference for materials scientists, engineers and professionals working in R&D in the area of semiconductors and optoelectronics. - Provides a comprehensive overview of mid-infrared photodetectors and light sources and the latest materials and devices - Reviews emerging areas of research in the field of mid-infrared optoelectronics, including new materials, such as wide bandgap materials, chalcogenides and new approaches, like heterogeneous integration - Includes information on the most relevant applications in industry, like gas sensing, spectroscopy and imaging

Atom Chips

Author : Jakob Reichel
Publisher : John Wiley & Sons
ISBN 13 : 3527643923
Total Pages : 412 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Atom Chips by : Jakob Reichel

Download or read book Atom Chips written by Jakob Reichel and published by John Wiley & Sons. This book was released on 2011-08-24 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: This stimulating discussion of a rapidly developing field is divided into two parts. The first features tutorials in textbook style providing self-contained introductions to the various areas relevant to atom chip research. Part II contains research reviews that provide an integrated account of the current state in an active area of research where atom chips are employed, and explore possible routes of future progress. Depending on the subject, the length of the review and the relative weight of the 'review' and 'outlook' parts vary, since the authors include their own personal view and style in their accounts.

Ultrafast Laser Processing

Author : Koji Sugioka
Publisher : CRC Press
ISBN 13 : 9814303690
Total Pages : 606 pages
Book Rating : 4.8/5 (143 download)

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Book Synopsis Ultrafast Laser Processing by : Koji Sugioka

Download or read book Ultrafast Laser Processing written by Koji Sugioka and published by CRC Press. This book was released on 2013-06-24 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades, the rapid development of ultrafast lasers, such as femtosecond lasers and picosecond lasers, has opened up new avenues for material processing due to their unique features such as ultrashort pulse width and extremely high peak intensity. These techniques have become a common tool for micro- and nanoprocessing of a variety

Handbook of Thermal Conductivity

Author : Carl L. Yaws
Publisher :
ISBN 13 :
Total Pages : 398 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Handbook of Thermal Conductivity by : Carl L. Yaws

Download or read book Handbook of Thermal Conductivity written by Carl L. Yaws and published by . This book was released on 1995 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Experimental Investigation of a Large-scale, Two-dimensional, Mixed-compression Inlet System

Author : Norman D. Wong
Publisher :
ISBN 13 :
Total Pages : 68 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Experimental Investigation of a Large-scale, Two-dimensional, Mixed-compression Inlet System by : Norman D. Wong

Download or read book Experimental Investigation of a Large-scale, Two-dimensional, Mixed-compression Inlet System written by Norman D. Wong and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large-scale, variable-geometry inlet model with a design Mach number of 3.0 was tested at Mach numbers from 1.55 to 3.2. Variable features of the inlet for off-design operation are an adjustable-height ramp system and a translating cowl. This report presents experimental results for a diffuser and boundary-layer bleed configuration which was optimized at the design Mach number. Overall performance was high with throat-mounted vortex generators, which were effective in reducing flow distortion in the subsonic diffuser at the higher Mach numbers.