Perturbation Of The Local Charge Concentrations In The Atmosphere Due To High Irradiance Laser Beams

G J. Fetzer; J E Stockley; L. J. Radziemski

doi:10.1117/12.951740

8 August 1989 Perturbation Of The Local Charge Concentrations In The Atmosphere Due To High Irradiance Laser Beams

G J. Fetzer, J E Stockley, L. J. Radziemski

Proceedings Volume 1060, Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere; (1989) https://doi.org/10.1117/12.951740
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

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.

Citation Download Citation

G J. Fetzer, J E Stockley, and L. J. Radziemski "Perturbation Of The Local Charge Concentrations In The Atmosphere Due To High Irradiance Laser Beams", Proc. SPIE 1060, Nonlinear Optical Beam Manipulation and High Energy Beam Propagation Through the Atmosphere, (8 August 1989); https://doi.org/10.1117/12.951740

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