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Author : Peter B. Ulrich
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (114 download)
Download or read book Propagation of High-energy Laser Beams Through the Earth's Atmosphere II written by Peter B. Ulrich and published by . This book was released on 1991 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter B. Ulrich
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.3/5 (91 download)
Download or read book Propagation of High-energy Laser Beams Through the Earth's Atmosphere II written by Peter B. Ulrich and published by . This book was released on 1991 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter B. Ulrich
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (759 download)
Download or read book Propagation of High-energy Laser Beams Through the Earth's Atmosphere II written by Peter B. Ulrich and published by . This book was released on 1991 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter B. Ulrich
Publisher : SPIE-International Society for Optical Engineering
ISBN 13 :
Total Pages : 444 pages
Book Rating : 4.3/5 (91 download)
Download or read book Propagation of High-energy Laser Beams Through the Earth's Atmosphere written by Peter B. Ulrich and published by SPIE-International Society for Optical Engineering. This book was released on 1990 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter B. Ulrich
Publisher :
ISBN 13 :
Total Pages : 618 pages
Book Rating : 4.:/5 (112 download)
Download or read book Propagation of High-Energy Laser Beams Through the Earth's Atmosphere written by Peter B. Ulrich and published by . This book was released on 1990 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter B. Ulrich
Publisher :
ISBN 13 : 9780819402622
Total Pages : 0 pages
Book Rating : 4.4/5 (26 download)
Download or read book Propagation of High-energy Laser Beams Through the Earth's Atmosphere written by Peter B. Ulrich and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 : 9780819402615
Total Pages : 212 pages
Book Rating : 4.4/5 (26 download)
Download or read book Propagation of High-energy Laser Beams Through the Earth's Atmosphere written by and published by . This book was released on 1990 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Time-dependent Propagation of High-energy Laser Beams Through the Atmosphere written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Various factors that can affect thermal blooming in stagnation zones are examined, including stagnation-zone motion, longitudinal air motion in the neighborhood of the stagnation zone, and the effects of scenario noncoplanarity. Of these effects, only the last offers any reasonable hope of reducing the strong thermal blooming that normally accompanies stagnation zones; in particular, noncoplanarity should benefit multipulse more than cw beams. The methods of treating nonhorizontal winds hydrodynamically for cw and multipulse steady-state sources are discussed. Pulse ''self-blooming'' in the triangular pulse approximation is discussed in the context of both single and multipulse propagation. It is shown that self-blooming and multipulse blooming cannot be treated independently.
Author : National Aeronaut Administration (Nasa)
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.6/5 (79 download)
Download or read book High Energy Laser Beam Propagation in the Atmosphere written by National Aeronaut Administration (Nasa) and published by . This book was released on 2020-07-31 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The method of moments is used to define and derive expressions for laser beam deflection and beam radius broadening for high-energy propagation through the Earth s atmosphere. These expressions are augmented with the integral invariants of the corresponding nonlinear parabolic equation that describes the electric field of high-energy laser beam to propagation to yield universal equations for the aforementioned quantities; the beam deflection is a linear function of the propagation distance whereas the beam broadening is a quadratic function of distance. The coefficients of these expressions are then derived from a thin screen approximation solution of the nonlinear parabolic equation to give corresponding analytical expressions for a target located outside the Earth s atmospheric layer. These equations, which are graphically presented for a host of propagation scenarios, as well as the thin screen model, are easily amenable to the phase expansions of the wave front for the specification and design of adaptive optics algorithms to correct for the inherent phase aberrations. This work finds application in, for example, the analysis of beamed energy propulsion for space-based vehicles. Manning, Robert M. Glenn Research Center NASA/TM-2012-217634, E-18279 WBS 439432.04.07.05 METHOD OF MOMENTS; WAVE PROPAGATION; HIGH POWER LASERS; NONLINEAR EQUATIONS; ATMOSPHERIC STRATIFICATION; EARTH ATMOSPHERE; ADAPTIVE OPTICS; POWER BEAMING; ELECTRIC FIELDS
Author : J. Morris
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (455 download)
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:
Author : J. R. Morris
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (455 download)
Download or read book Time-Dependent Propagation of High-Energy Laser Beams Through the Atmosphere: III. written by J. R. Morris and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert M. Manning
Publisher : BiblioGov
ISBN 13 : 9781289145286
Total Pages : 38 pages
Book Rating : 4.1/5 (452 download)
Download or read book High Energy Laser Beam Propagation in the Atmosphere written by Robert M. Manning and published by BiblioGov. This book was released on 2013-06 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The method of moments is used to define and derive expressions for laser beam deflection and beam radius broadening for high-energy propagation through the Earth s atmosphere. These expressions are augmented with the integral invariants of the corresponding nonlinear parabolic equation that describes the electric field of high-energy laser beam to propagation to yield universal equations for the aforementioned quantities; the beam deflection is a linear function of the propagation distance whereas the beam broadening is a quadratic function of distance. The coefficients of these expressions are then derived from a thin screen approximation solution of the nonlinear parabolic equation to give corresponding analytical expressions for a target located outside the Earth s atmospheric layer. These equations, which are graphically presented for a host of propagation scenarios, as well as the thin screen model, are easily amenable to the phase expansions of the wave front for the specification and design of adaptive optics algorithms to correct for the inherent phase aberrations. This work finds application in, for example, the analysis of beamed energy propulsion for space-based vehicles.
Author : Charles B. Hogge
Publisher :
ISBN 13 :
Total Pages : 65 pages
Book Rating : 4.:/5 (227 download)
Download or read book Propagation of High-Energy Laser Beam in the Atmosphere written by Charles B. Hogge and published by . This book was released on 1974 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric turbulence can affect the propagation of laser beams of any power. Thermal blooming, a nonlinear propagation process, can seriously degrade high-energy beams. These two processes are reviewed in detail, with emphasis on parametric effects such as aperture size wavelength, and focal distance. Included in the discussion are such new topics as supersonic slewing and stagnation zone problems. (Author).
Author : J. R. Morris
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (634 download)
Download or read book Time-dependent Propagation of High-energy Laser Beams Through the Atmosphere, IV written by J. R. Morris and published by . This book was released on 1978 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Michael Manning
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (124 download)
Download or read book High Energy Laser Beam Propagation in the Atmosphere :. written by Robert Michael Manning and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Author :
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (227 download)
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.
