Compact self-contained pulsed HF laser based on an auto-wave photon-branched chain reaction

Renat R. Letfullin; Henk F. Arnoldus; John T. Foley

doi:10.1117/12.472744

5 June 2003 Compact self-contained pulsed HF laser based on an auto-wave photon-branched chain reaction

Renat R. Letfullin, Henk F. Arnoldus, John T. Foley

Proceedings Volume 4971, Gas and Chemical Lasers and Intense Beam Applications IV; (2003) https://doi.org/10.1117/12.472744
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States

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.

Citation Download Citation

Renat R. Letfullin, Henk F. Arnoldus, and John T. Foley "Compact self-contained pulsed HF laser based on an auto-wave photon-branched chain reaction", Proc. SPIE 4971, Gas and Chemical Lasers and Intense Beam Applications IV, (5 June 2003); https://doi.org/10.1117/12.472744

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