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Proceedings Paper

Perturbation Of The Local Charge Concentrations In The Atmosphere Due To High Irradiance Laser Beams
Author(s): G J. Fetzer; J E Stockley; L. J. Radziemski
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Paper Abstract

A model has been developed to simulate the effects of a 314.5 nm laser pulse on creating electrons and ions in an atmospheric path. This wavelength was selected to exploit a 3+1 multiphoton ionization resonance with the 3p5 4s 1P°1 excited state in naturally occurring argon. Using a system of coupled rate equations and a detailed collection of atmospheric chemistry reactions the model determines the concentrations of electrons and ions of major atmospheric constituents as functions of altitude, time and laser energy. When considering the propagation of a laser beam of this wavelength through the atmosphere, results provided by the model indicate large peak electron densities can be obtained, without causing optical breakdown, depending on the beam irradiance and distance the beam has propagated.

Paper Details

Date Published: 8 August 1989
PDF: 14 pages
Proc. SPIE 1060, Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere, (8 August 1989); doi: 10.1117/12.951740
Show Author Affiliations
G J. Fetzer, OPHIR Corporation (United States)
J E Stockley, OPHIR Corporation (United States)
L. J. Radziemski, New Mexico State University (United States)

Published in SPIE Proceedings Vol. 1060:
Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere
Robert A. Fisher; LeRoy E. Wilson, Editor(s)

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