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Effects Of Particulate Matter On Atmospheric Propagation Of Co2 Laser Radiation
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Book Synopsis Effects of Particulate Matter on Atmospheric Propagation of CO2 Laser Radiation by :
Download or read book Effects of Particulate Matter on Atmospheric Propagation of CO2 Laser Radiation written by and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two main nonlinear propagation problems encountered by high power CO2 laser radiation in the atmosphere are gas breakdown and thermal blooming. The influence of particulate matter on gas breakdown and also on thermal blooming was investigated. Typical atmospheric conditions contain approximately 1000 particles/cc. The presence of these particles in the air path of a high power laser beam can dramatically influence the propagation of the beam. This is illustrated by a photograph which shows particles being vaporized and ionized by a high power pulsed CO2 laser beam. The plasma balls generated not only attenuate the laser radiation, but they also act as scattering centers with completely different scattering characteristics than the original particles. The hot vapor can also act as a thermal source which could cause self-induced thermal distortion of subsequent laser pulses.
Book Synopsis The Effect of Atmospheric Particulate Matter on the Propagation of a Laser Beam by : Petr Chylek
Download or read book The Effect of Atmospheric Particulate Matter on the Propagation of a Laser Beam written by Petr Chylek and published by . This book was released on 1980 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Light scattering by a pair of conjugate nonspherical particles. Verification of a linear relation between IR extinction, absorption and liquid water content of fogs; Perturbation approach to light scattering by non-spherical particles; and Surface waves in light scattering by nonspherical particles.
Book Synopsis Atmospheric Effects on CO2 Laser Propagation by : S. S. R. Murty
Download or read book Atmospheric Effects on CO2 Laser Propagation written by S. S. R. Murty and published by . This book was released on 1978 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-Power Laser Radiation in Atmospheric Aerosols by : V.E. Zuev
Download or read book High-Power Laser Radiation in Atmospheric Aerosols written by V.E. Zuev and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unique properties of laser radiation including its monochromatic properties, polarization, high spectral intensity, coherence, narrow beam divergence, the possibility of controlling the pulse duration and radiation spectrum and, finally, the fact that extremely high power and energy create very favorable conditions for the extensive application of lasers to communi cation systems, systems for the lidar sensing and ultra-high-precision ranging, navigation, remote monitoring of the environment, and many other systems operating in the atmosphere. The operative efficiency of the above systems depends significantly on the state of the atmosphere and the corresponding behavior of laser radia tion propagating through it. This circumstance has stimulated the studies of the above regularities during the passt 10-15 years. For the investiga tions to be carried out the scientists were forced to develop new theories and methods for studying the problem experimentally. Moreover, during such investigations some previously unknown phenomena were observed, among them the nonlinear effects accompanying high-power laser radiation propagating through the atmosphere are of paramount importance. Among the nonlinear effects caused by high-power laser radiation inter action with the atmosphere, the effects accompanying the propagation of high-power radiation through the atmospheric aerosols are of particular interest. Aerosols always occur in the atmosphere. It should be noted that the microphysical and optical characteristics of atmospheric aerosols vary widely, this fact causes a great variety in the features of their inter action with radiation.
Book Synopsis A Literature Survey on the Atmospheric Effects on the Propagation of 1.06 Micron Laser Radiation by : Eddie L. Roy
Download or read book A Literature Survey on the Atmospheric Effects on the Propagation of 1.06 Micron Laser Radiation written by Eddie L. Roy and published by . This book was released on 1965 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CO2 Lasers written by W. W. Duley and published by . This book was released on 1976 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: CO2 Lasers: Effects and Applications examines and summarizes the important applications of the device in different areas of study like physics, chemistry, and engineering. -- Google books
Book Synopsis The Interaction of Suspended Atmospheric Particles with Laser Radiation by : J. R. Triplett
Download or read book The Interaction of Suspended Atmospheric Particles with Laser Radiation written by J. R. Triplett and published by . This book was released on 1972 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: SUSPENDED PARTICLES. Initial breakdown in either the vaporized particle or in the shock-heated adjacent gas may result in a laser-supported detonation or in a subsonic ionization wave. The nonlinear, nonequilibrium kinetic equations describing the energy distribution of free electrons, the vibrational excitation of molecules, the dominant electronic excitation, attachment, and ionization reactions and their inverses, electron heating by the laser, and electron diffusion, are solved numerically. The dominant eigenvalue of the Jacobian of these equations is investigated as a criterion for breakdown. Calculations for vaporized silica and air at temperatures from 300K to 6000K under irradiation by a CO2 laser show expected lowering of breakdown threshold for preheated material. Heating of particle vapor and subsequent formation of a shock wave are calculated with a Lagrangian gasdynamic method. Preliminary theoretical predictions for the effects of particles on lowering of the air breakdown threshold are then obtained. (Abstract Modified Abstract).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser-Interaction Studies. Part 1. A Theoretical Investigation of Laser Supported Combustion Waves. Part 2. Measurements of the Effect of Particulate, Matter on Air Breakdown by 1.06 Micron by : A. A. Boni
Download or read book Laser-Interaction Studies. Part 1. A Theoretical Investigation of Laser Supported Combustion Waves. Part 2. Measurements of the Effect of Particulate, Matter on Air Breakdown by 1.06 Micron written by A. A. Boni and published by . This book was released on 1974 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two separate non-linear effects which influence pulsed laser propagation and target interaction have been studied, e.g., laser supported combustion wave (LSC) propagation and laser-induced gas breakdown. A theoretical model describing LSC propagation and which includes the non-linear contributions of the plasma transport and thermodynamic coefficients throughout the wave profile has been developed. The model is one-dimensional and the system of equations is solved by use of the method of quasilinearization. The model uses the deflagration approximation which implies that pressure balance with the atmosphere exists. Numerical results of our calculations are in good quantitative agreement with available experimental data. Experiments also have been performed to determine the effect of particulate matter on laser-induced air breakdown for Nd laser wavelengths (1.06 micrometer) and for pulse widths of 30 nsec. The breakdown thresholds for air in the presence of SiO2 and carbon fibers of 9 micrometer, 6.6 micrometer and 68 micrometer diameters were measured. (Modified author abstract).
Book Synopsis Government Reports Announcements by :
Download or read book Government Reports Announcements written by and published by . This book was released on 1974 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of Current Laser Abstracts by :
Download or read book Journal of Current Laser Abstracts written by and published by . This book was released on 1982 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CO2 Lasers Effects and Applications by : W Duley
Download or read book CO2 Lasers Effects and Applications written by W Duley and published by Elsevier. This book was released on 2012-12-02 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: CO2 Lasers: Effects and Applications examines and summarizes the important applications of the device in different areas of study like physics, chemistry, and engineering. In some parts of the book, the reader is assumed to be knowledgeable in university level mathematics or some specialized area in physics or chemistry. The book consists of 10 chapters where the first two establish the general concepts on lasers and CO2 lasers, respectively. Chapter 3 takes the reader further and presents a comprehensive review of optical components for use such as detectors, windows, and mirrors. Because the CO2 laser is mostly used as a heat source, the theory of laser-surface heating is relevant in the discussion. This theory is presented in Chapter 4. Chapters 5 and 6 meanwhile present a summary of observations on cutting, welding, and some related topics. The following chapters discuss the different applications of CO2 lasers in different areas and processes. Some of these applications include in the generation of thermal effect, laser deposition of thin films, spectroscopy, laser photochemistry, and meteorology and communication systems. The text is a good source of reference to both students and scientists in the areas of physics, chemistry, and engineering.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-03 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasma Physics Index written by and published by . This book was released on 1979 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optical Waves and Laser Beams in the Irregular Atmosphere by : Nathan Blaunstein
Download or read book Optical Waves and Laser Beams in the Irregular Atmosphere written by Nathan Blaunstein and published by CRC Press. This book was released on 2017-09-22 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book introduces optical wave propagation in the irregular turbulent atmosphere and the relations to laser beam and LIDAR applications for both optical communication and imaging. It examines atmosphere fundamentals, structure, and content. It explains specific situations occurring in the irregular atmosphere and for specific natural phenomena that affect optical ray and laser beam propagation. It emphasizes how to use LIDAR to investigate atmospheric phenomena and predict primary parameters of the irregular turbulent atmosphere and suggests what kinds of optical devices to operate in different atmospheric situations to minimize the deleterious effects of natural atmospheric phenomena.
Download or read book Air Pollution Abstracts written by and published by . This book was released on 1972 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1975 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
