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Proceedings Paper

Compact self-contained pulsed HF laser based on an auto-wave photon-branched chain reaction
Author(s): Renat R. Letfullin; Henk F. Arnoldus; John T. Foley
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Paper Abstract

The possible construction of a self-contained and compact pulsed chemical HF-laser based on an auto-wave photon-branched chain reaction initiated in a gaseous disperse medium composed of H2-F2-O2-He and Al particles by focused external IR radiation is studied theoretically. It is shown that minimization of the parameters of the main pulsed HF-laser units are achievable due to both the effect of ignition of the laser-chemical reaction in an auto-wave regime under the condition of external beam focusing and the effect of a huge laser energy gain of 1011. These effects provide strong reduction of the input pulse energy necessary for initiation, down to ~10-8 J, and make it possible to construct a self-contained laser with kilojoule output energy per pulse, which can be initiated by a small sub-microjoule master oscillator powered by an accumulator. Due to an increase in the general pressure of the working gases, up to P = 2.3 bar, and optimization of the parameters of the dispersed component (Al particles with a radius of r0 = 0.09 μm and a concentration of N0 = 1.4×109 cm-3), and the composition of the working mixture, the HF-laser system will ensure an output energy up to ~ 1.5 kJ in a pulse, produced in a small volume of ~ 2 L of active medium.

Paper Details

Date Published: 5 June 2003
PDF: 10 pages
Proc. SPIE 4971, Gas and Chemical Lasers and Intense Beam Applications IV, (5 June 2003); doi: 10.1117/12.472744
Show Author Affiliations
Renat R. Letfullin, Mississippi State University (United States)
Henk F. Arnoldus, Mississippi State Univ. (United States)
John T. Foley, Mississippi State Univ. (United States)

Published in SPIE Proceedings Vol. 4971:
Gas and Chemical Lasers and Intense Beam Applications IV
Steven J. Davis; Michael C. Heaven, Editor(s)

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