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Lasers. Active media
Optical pumping of chemical HF lasers on the basis of NF3–H2 and ClF5–H2 mixtures by an open surface discharge in the bleaching-wave mode
M. Yu. Artem'eva, A. S. Bashkinb, L. D. Mikheeva, V. M. Nesterova, M. Sentisc, V. I. Cheremiskina a P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
b NPO Energomash, Khimki, Moscow Region
c Institutе de Recherche sur les Phenomenes Hors Equilibre, France
Abstract:
Lasing on HF upon optical pumping by emission of an open discharge, using NF3 and ClF5 as donors of fluorine atoms, was obtained for the first time in a chemical laser and the bleaching-wave mode was realised in a chemical HF laser. An open surface discharge was used as a pump source. The velocity of the bleaching wave, which was formed under its action, reached ~8 km s-1. The formation of this wave leads to a rapid (with an ultrasonic velocity) replacement of the working medium in the lasing region, which provides a quantum laser efficiency close to unity. The optimum compo-sition of the working mixture was found to be NF3:H2:Kr = 6:10:125 Torr. For this composition, the output laser energy in a 3.2-μs pulse reached ~0.4 J and the specific output energy was 3.5 J litre-1. Approximately the same output characteristics of laser emission (0.35 J in a 3.5-μs pulse in the ClF5:H2:Kr=3:20:50 Torr mixture) were obtained in the system using ClF5 as donors of fluorine atoms.
Received: 14.06.2000 Revised: 11.02.2001
Citation:
M. Yu. Artem'ev, A. S. Bashkin, L. D. Mikheev, V. M. Nesterov, M. Sentis, V. I. Cheremiskin, “Optical pumping of chemical HF lasers on the basis of NF3–H2 and ClF5–H2 mixtures by an open surface discharge in the bleaching-wave mode”, Kvantovaya Elektronika, 31:7 (2001), 611–616 [Quantum Electron., 31:7 (2001), 611–616]
Linking options:
https://www.mathnet.ru/eng/qe2013 https://www.mathnet.ru/eng/qe/v31/i7/p611
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Abstract page: | 142 | Full-text PDF : | 79 | First page: | 1 |
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