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Proceedings Paper

Giant energy gain in a pulsed HF laser based on a photon-branched chain reaction
Author(s): Renat R. Letfullin; Henk F. Arnoldus; John T. Foley
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Paper Abstract

A huge energy gain is predicted theoretically in a pulsed chemical laser-amplifier based on a photon-branched chain reaction initiated in a gaseous dispersed medium composed of H2-F2-O2-He and Al particles by focused external infrared radiation. It is shown that this effect is due to the possibility of ignition of the laser-chemical reaction in an initial small focal volume of the active medium. It then spreads out of this minimal volume spontaneously in the auto-wave regime without external power sources and subsequently fills the entire volume of the laser cavity with a high intensive electromagnetic field as self-supporting cylindrical photon-branching zones formed by the paths of the rays inside the unstable telescopic cavity. Calculations show that the ignition of an auto-wave photon-branched chain reaction under the condition of external signal focusing reduces strongly the input pulse energy necessary for initiation up to ~ 10-8 J, and thereby allows a huge value of the energy gain of ~ 1011. The predicted effect of this huge laser energy gain should make it possible to construct a self-contained laser, which can be initiated by a very weak source signal.

Paper Details

Date Published: 5 June 2003
PDF: 12 pages
Proc. SPIE 4971, Gas and Chemical Lasers and Intense Beam Applications IV, (5 June 2003); doi: 10.1117/12.472745
Show Author Affiliations
Renat R. Letfullin, Mississippi State Univ. (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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