Self-contained compact pulsed laser based on an auto-wave photon-branched chain reaction |
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| Authors: | RR Letfullin TF George |
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| Institution: | (1) Theoretical Department, Lebedev Physics Institute, Russian Academy of Sciences (Samara Branch), Novo-Sadovaya str. 221, 443011 Samara, Russia (Fax: +7-8462/355-600; E-mail: renat@fian.samara.ru), RU;(2) Office of the Chancellor/Departments of Chemistry and Physics & Astronomy University of Wisconsin–Stevens Point, Stevens Point, WI 54481–3897, USA (Fax: +1-715/346-2561; E-mail: tgeorge@uwsp.edu), US |
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| 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 theoretically substantiated. It is shown that an autonomous system
and 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 up to ∼10-8 J, and make it possible to construct a self-contained laser with kilojoule output energy, which can be initiated by a small
submicrojoule master oscillator powered by an accumulator. Due to an increase in the general pressure of working gases up
to P=2.3 bar and optimization of the parameters of the dispersed component (Al particles with radius r0=0.09 μm and concentration 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 from
the rather small volume of ∼2 L of the active medium.
Received: 18 April 2000 / Revised version: 21 August 2000 / Published online: 8 November 2000 |
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| Keywords: | PACS: 42 55Ks 42 60 By 82 40 Tc |
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