Effective nonchain HF laser excited by a self-sustained discharge |
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Authors: | A N Panchenko V M Orlovskii V F Tarasenko |
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Institution: | (1) Institute of High-Current Electronics, Siberian Division, Russian Academy of Sciences, Akademicheskii pr. 4, Tomsk, 634055, Russia |
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Abstract: | Lasing and discharge in mixtures of SF6 with hydrogen and hydrocarbons are investigated. If the chemical reaction is initiated by a self-sustained discharge (a generator
with both an inductive and capacitive energy storage can be used), the maximum lasing efficiency is attained at high values
of the ratio E/p (where E is the electric field intensity and p is the pressure in the mixture) if shaped electrodes and preionization of the discharge gap are employed. For the first time,
the lasing efficiency obtained in a nonchain HF laser is as high as 10% of the energy deposit and 4.5% of the stored energy
for a specific radiation energy of ≈140 J/(l atm). At high efficiencies, the emission spectrum of the nonchain HF laser significantly
broadens and cascade lasing at P(3-2) → P(2-1) → P(1-0) vibrational transitions for several rotational lines is realized. |
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Keywords: | |
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