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High Energy Lasers For Ship Defense And Maritime Propagation
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Book Synopsis High Energy Lasers for Ship-Defense and Maritime Propagation by : Vasileios Bouras
Download or read book High Energy Lasers for Ship-Defense and Maritime Propagation written by Vasileios Bouras and published by . This book was released on 2002-12-01 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Energy Lasers (HELs) are a new class of weapons that may be of great value to the Navy in the near future. A high-power Free Electron Laser (FEL) is being designed using short Rayleigh-length resonators to increase the spot size at the mirrors and hence avoid mirror damage. Three-dimensional simulations are used to study the effects of an electron beam misalignment (electron beam tilt). This thesis shows that the proposed design is tolerant of typical electron beam misalignments. The performance of a step-tapered undulator is also studied for the 100 kW proposed upgrade of the Jefferson Laboratory FEL. The results of this research show that the gain is above the required threshold for the 100 kW design while the energy spread does not change significantly over any undulator design. The spectrum of the proposed FEL shows that most of the power is concentrated around the fundamental frequency. It is shown in this thesis that smooth FEL pulses can significantly reduce the negative effects of absorption and scattering. Recent HEL science and technology developments are discussed for both Free Electron and Solid State Lasers.
Book Synopsis Defense Science Board Task Force on High Energy Laser Weapon Systems Applications by :
Download or read book Defense Science Board Task Force on High Energy Laser Weapon Systems Applications written by and published by DIANE Publishing. This book was released on with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Military Laser Technology for Defense by : Alastair D. McAulay
Download or read book Military Laser Technology for Defense written by Alastair D. McAulay and published by John Wiley & Sons. This book was released on 2011-04-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in ultra-high-power lasers, including the free-electron laser, and impressive airborne demonstrations of laser weapons systems, such as the airborne laser, have shown the enormous potential of laser technology to revolutionize 21st century warfare. Military Laser Technology for Defense, includes only unclassified or declassified information. The book focuses on military applications that involve propagation of light through the atmosphere and provides basic relevant background technology. It describes high-power lasers and masers, including the free-electron laser. Further, Military Laser Technology for Defense addresses how laser technology can effectively mitigate six of the most pressing military threats of the 21st century: attack by missiles, terrorists, chemical and biological weapons, as well as difficulty in imaging in bad weather and threats from directed beam weapons and future nuclear weapons. The author believes that laser technology will revolutionize warfare in the 21st century.
Book Synopsis High Energy Laser (Hel) by : Bahman Zohuri
Download or read book High Energy Laser (Hel) written by Bahman Zohuri and published by Trafford Publishing. This book was released on 2014-11-22 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: Directed Energy Weapons is nothing new to mankind, historically the origination of such weapons falls in centuries ago when first time the famous Greek mathematician, physicist, engineer, inventor, and astronomer Archimedes of Syracuse used different mirrors to collect sunbeams and focusing them on Romans fleet in order to destroy enemy ships with fire. This is known as the Archimedes Heat Ray. Archimedes may have used mirrors acting collectively as a parabolic reflector to burn ships attacking Syracuse. The device was used to focus sunlight onto approaching ships, causing them to catch fire. Of course the myth or reality of Archimedes Heat Ray still is a questionable story, but certain experiments with the help of a group of students from Massachusetts Institute of Technology was carried out with 127 one-foot (30 cm) square mirror tiles in October of 2005 that was focused on a mock-up wooden ship at a range of around 100 feet (30 m). The flames broke out on a patch of the ship, but only after the sky had been cloudless and the ship had remained stationary for around ten minutes. It was concluded the device was a feasible weapon under these conditions.
Book Synopsis High Energy Laser Applications in a Surface Combatant by :
Download or read book High Energy Laser Applications in a Surface Combatant written by and published by . This book was released on 2005 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Free Electron Laser (FEL) can provide the naval surface combatant with a directed energy weapon that can be used against a large target set. Due to space constraints in a shipboard installation, an exploration is conducted to show the feasibility of short Rayleigh length FELs using a FEL simulation. Low atmosphere engagements are discussed through the modeling of a turbulence module for laser propagation in cruise missile defense applications. In particular, this thesis explores the difficulties in engaging a short/medium range theater ballistic missile (TBM) in the terminal phase as an engagement scenario in support of littoral operations using HELCoMES, developed by SAIC, as an engagement analysis tool. A concept of operations (CONOPS) for the use of a FEL as an area TBM defensive weapon is explored, using a unitary, high explosive warhead model and extrapolations to other TBM warhead types.
Book Synopsis Directed Energy Weapons by : Bahman Zohuri
Download or read book Directed Energy Weapons written by Bahman Zohuri and published by Springer. This book was released on 2016-08-29 with total page 829 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book delves deeply into the real-world technologies behind the ‘directed energy weapons’ that many believe exist only within the confines of science fiction. On the contrary, directed energy weapons such as high energy lasers are very real, and this book provides a crash course in all the physical and mathematical concepts that make these weapons a reality. Written to serve both scientists researching the physical phenomena of laser effects, as well as engineers focusing on practical applications, the author provides worked examples demonstrating issues such as how to solve for heat diffusion equation for different boundary and initial conditions. Several sections are devoted to reviewing and dealing with solutions of diffusion equations utilizing the aid of the integral transform techniques. Ultimately this book examines the state-of-the-art in currently available high energy laser technologies, and suggests future directions for accelerating practical applications in the field.“br>/div
Book Synopsis High Energy Laser Propagation Handbook by : Atmospheric Sciences Laboratory (U.S.)
Download or read book High Energy Laser Propagation Handbook written by Atmospheric Sciences Laboratory (U.S.) and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Time-Dependent Propagation of High-Energy Laser Beams Through the Atmosphere: III. by : J. Morris
Download or read book Time-Dependent Propagation of High-Energy Laser Beams Through the Atmosphere: III. written by J. Morris and published by . This book was released on 1977 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement and Modeling of High Energy Laser (HEL)-Droplet Interactions by : Timothy E. Tracey
Download or read book Measurement and Modeling of High Energy Laser (HEL)-Droplet Interactions written by Timothy E. Tracey and published by . This book was released on 2016 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of lasers as weapons, it is necessary to understand how a laser propagates through a complex medium. For the U.S. Navy, the complexity of a maritime environment imposes particular challenges for laser propagation due to high concentrations of water high concentrations of water vapor and high probabilities of liquid water in the form of fog, rain, or sea spray along the beam path. Although considerable research has gone into characterizing the maritime environment and simulating laser propagation through water vapor and turbulence, the interactions between a high energy laser (HEL) and liquid water are poorly understood. A project is taking place in the U.S. Naval Academy’s Directed Energy Research Center to investigate the interaction of a high energy laser and single water droplets. An HEL is used to irradiate droplets of water, and the droplet shape and size, the infrared radiation from the droplet, and the transmitted beam profile are measured and recorded. To control the droplet shape, it will be levitated using a commercial ultrasonic levitator, where the drop is held in place at a node by the pressure from a standing sound wave. The results of this experiment will provide an understanding of the coupled interaction between an HEL and a water droplet.
Book Synopsis Propagation of High Energy Laser Beams in Various Environments by :
Download or read book Propagation of High Energy Laser Beams in Various Environments written by and published by . This book was released on 2007 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report the results of our theoretical study on the key physical processes that affect the propagation of nigh energy lasers in the atmosphere. The main objective of this study is to discuss the optimum laser wavelength and power for efficient propagation in maritime, desert, rural and urban atmospheric environments. The theoretical/numerical model used in this study includes the effects of aerosol and molecular scattering, aerosol heating and vaporization, thermal blooming due to aerosol and molecular absorption, atmospheric turbulence, and beam quality. These processes are modeled in a fully three-dimensional and time-dependent manner. It is found that aerosol particles are particularly important because they result in laser scattering, absorption and enhanced thermal blooming. In the water vapor transmission windows, the total absorption coefficient driving thermal blooming can be caused mainly by aerosols and not water vapor. In certain maritime environments the deleterious effects of aerosols can be reduced by vaporization. Aerosol particles which cannot be vaporized, such as those Consisting of dust, soot, etc., can significantly increase thermal blooming. The optimum wavelength and power for propagation are found for each atmospheric environment.
Book Synopsis Navy Shipboard Lasers for Surface, Air, and Missile Defense: Background and Issues for Congress by :
Download or read book Navy Shipboard Lasers for Surface, Air, and Missile Defense: Background and Issues for Congress written by and published by DIANE Publishing. This book was released on with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Navy Shipboard Lasers for Surface, Air, and Missile Defense by : Department of Defense (DoD)
Download or read book Navy Shipboard Lasers for Surface, Air, and Missile Defense written by Department of Defense (DoD) and published by . This book was released on 2017-09-12 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Navy officials announced in April 2013 that a solid-state laser would be deployed onboard the U.S.S. Ponce, providing the first at-sea demonstration of a revolutionary directed energy weapon. The demonstration is part of a wider portfolio of near-term Navy directed energy programs that promise rapid fielding, demonstration and prototyping efforts for shipboard, airborne and ground systems. The Office of Naval Research (ONR) and Naval Sea Systems Command recently performed demonstrations of high-energy lasers aboard a moving surface combatant ship, as well as against remotely piloted aircraft. Through careful planning of such demonstrations and by leveraging investments made through other DoD agencies, researchers have been able to increase the ruggedness, power and beam quality of lasers, more than doubling the range of the weapons. This book includes a detailed report on the laser program, Navy Shipboard Lasers for Surface, Air, and Missile Defense: Background and Issues for Congress. Contents include: Scope, Sources, and Terminology * Background * Shipboard Lasers in General * Potential Advantages and Limitations of Shipboard Lasers * Potential Targets for Shipboard Lasers * Required Laser Power Levels for Countering Targets * Types of Lasers Being Developed for Potential Shipboard Use * Fiber Solid State Lasers (Fiber SSLs). * Slab Solid State Lasers (Slab SSLs) * Free Electron Lasers (FELs) * Navy Surface Fleet's Generalized Vision for Shipboard Lasers * Remaining Technical Challenges * ONR Solid-State Laser Technology Maturation Effort * Naval Directed Energy Steering Group * Directed Energy Vision for U.S. Naval Forces * Destroyers and LCSs Reportedly Leading Candidate Platforms * FY2012 Congressional Report Language * FY2012 National Defense Authorization Act (H.R. 1540/P.L. 112-81) * FY2012 Military Construction and Veterans Affairs and Related Agencies * Appropriations Act (H.R. 2055/P.L. 112-74) * FY2013 Funding Request * Issues for Congress * Program of Record and Roadmap * Arguments Against Developing a Roadmap or Program of Record. * Arguments Supporting Developing a Roadmap or Program of Record * Number of Laser Types to Continue Developing * Potential Strategies * Relative Merits of Laser Types * Implications for Ship Design and Acquisition * Options for Congress * Legislative Activity for FY2013 * FY2013 Funding Request. "The future is here," said Peter A. Morrision, program officer for ONR's Sold-State Laser Technology Maturation Program. "The solid-state laser is a big step forward to revolutionizing modern warfare with directed energy, just as gunpowder did in the era of knives and swords." Officials consider the solid-state laser a revolutionary technology that gives the Navy an extremely affordable, multi-mission weapon with a deep magazine and unmatched precision, targeting and control functions. Because lasers run on electricity, they can be fired as long as there is power and provide a measure of safety as they don't require carrying propellants and explosives aboard ships.
Author :Congressional Research Congressional Research Service Publisher :CreateSpace ISBN 13 :9781505875058 Total Pages :60 pages Book Rating :4.8/5 (75 download)
Book Synopsis Navy Shipboard Lasers for Surface, Air, and Missile Defense by : Congressional Research Congressional Research Service
Download or read book Navy Shipboard Lasers for Surface, Air, and Missile Defense written by Congressional Research Congressional Research Service and published by CreateSpace. This book was released on 2014-12-23 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Department of Defense (DOD) development work on high-energy military lasers, which has been underway for decades, has reached the point where lasers capable of countering certain surface and air targets at ranges of about a mile could be made ready for installation on Navy surface ships over the next few years. More powerful shipboard lasers, which could become ready for installation in subsequent years, could provide Navy surface ships with an ability to counter a wider range of surface and air targets at ranges of up to about 10 miles. The Navy and DOD have conducted development work on three principal types of lasers for potential use on Navy surface ships-fiber solid state lasers (SSLs), slab SSLs, and free electron lasers (FELs). One fiber SSL prototype demonstrator developed by the Navy is the Laser Weapon System (LaWS). The Navy plans to install a LaWS system on the USS Ponce, a ship operating in the Persian Gulf as an interim Afloat Forward Staging Base (AFSB[I]), in the summer of 2014 to conduct continued evaluation of shipboard lasers in an operational setting. The Navy reportedly anticipates moving to a shipboard laser program of record in "the FY2018 time frame" and achieving an initial operational capability (IOC) with a shipboard laser in FY2020 or FY2021. Although the Navy is developing laser technologies and prototypes of potential shipboard lasers, and has a generalized vision for shipboard lasers, the Navy currently does not yet have a program of record for procuring a production version of a shipboard laser. The possibility of equipping Navy surface ships with lasers in coming years raises a number of potential issues for Congress, including the following:
Book Synopsis Atmospheric Propagation of High Energy Lasers: Modeling, Simulation, Tracking, and Control by :
Download or read book Atmospheric Propagation of High Energy Lasers: Modeling, Simulation, Tracking, and Control written by and published by . This book was released on 2008 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under this MRI funded by HEL JTO and AFOSR, UCLA, in collaboration with Michigan Tech, Georgia Tech, MZA Associates Corporation, Tempest Technologies, Trex Enterprises Corporation, ATK Mission Research and the Air Force Institute of Technology (AFIT), has established a comprehensive research program in high-performance control of high energy lasers (HEL), modeling and simulation of HEL, wavefront sensing, and target tracking. Under this program, researchers have developed adaptive filtering and control methods for wavefront prediction and correction and precise pointing of laser beams to compensate for the effects of atmospheric turbulence, platform vibration, target motion and sensor noise, all of which degrade the performance of laser weapons and communication systems. The research team for this multidisciplinary research initiative has made a comprehensive, integrated attack on the broad range of modeling and simulation, beam control, and target tracking problems that must be solved to achieve the potential of high energy laser systems. This report discusses the main results of the research.
Book Synopsis השפעת התנאים הסביבתיים על היווצרות הנארי בישראל by :
Download or read book השפעת התנאים הסביבתיים על היווצרות הנארי בישראל written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crs Report for Congress by : Congressional Research Service: The Libr
Download or read book Crs Report for Congress written by Congressional Research Service: The Libr and published by BiblioGov. This book was released on 2013-10 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Department of Defense (DOD) development work on high-energy military lasers, which has been underway for decades, has reached the point where lasers capable of countering certain surface and air targets at ranges of about a mile could be made ready for installation on Navy surface ships over the next few years. More powerful shipboard lasers, which could become ready for installation in subsequent years, could provide Navy surface ships with an ability to counter a wider range of surface and air targets at ranges of up to about 10 miles. These more powerful lasers might, among other things, provide Navy surface ships with a terminal-defense capability against certain ballistic missiles, including the anti-ship ballistic missile (ASBM) that China is believed to be developing. The Navy and DOD are developing three principal types of lasers for potential use on Navy surface ships--fiber solid state lasers (SSLs), slab SSLs, and free electron lasers (FELs). The Navy's fiber SSL prototype demonstrator is called the Laser Weapon System (LaWS). Among DOD's multiple efforts to develop slab SSLs for military use is the Maritime Laser Demonstration (MLD), a prototype laser weapon developed as a rapid demonstration project. The Navy has developed a lower-power FEL prototype ...
Author :Dr. Steven J. Davis Publisher :SPIE-International Society for Optical Engineering ISBN 13 :9780819488817 Total Pages :156 pages Book Rating :4.4/5 (888 download)
Book Synopsis High Energy/average Power Lasers and Intense Beam Applications VI by : Dr. Steven J. Davis
Download or read book High Energy/average Power Lasers and Intense Beam Applications VI written by Dr. Steven J. Davis and published by SPIE-International Society for Optical Engineering. This book was released on 2012-01-01 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes Proceedings Vol. 7821
