Spectral and energy characteristics of a pulsed hydrogen fluoride laser and rotational relaxation of HF molecules

Journal Article · Sun Oct 31 04:00:00 EST 1999 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE1999V029N10ABEH001591· OSTI ID:21437856

Azarov, M A; Troshchinenko, G A ^[1]; Igoshin, Valerii I; Pichugin, S Yu ^[2]

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1. Russian Science Centre 'Applied Chemistry', St Petersburg (Russian Federation)
2. Samara Branch of the P.N. Lebedev Physics Institute, Russian Academy of Sciences, Samara (Russian Federation)

The spectrotemporal and energy characteristics of the radiation of a pulsed chemical H{sub 2}-F{sub 2} laser were calculated on the basis of a multilevel model taking into account the nonequilibrium population of the rotational levels, and were compared with experimental data. The theoretical model took into account the stimulated emission of radiation as a result of the {nu}, j-1 {yields} {nu}-1, j transitions ({nu} = 1-6 and j=4-12) in the HF molecule. The rotational relaxation rate constants of the HF molecule were varied in the calculations. Comparison of the calculated and experimental spectral characteristics of the laser radiation indicates that the rate of the rotational transitions involving high (j=10-12) rotational sublevels of HF is insufficient, leading to an appreciable reduction in the energy of the output radiation for lines with such values of j, compared with lines characterised by j=7, 8. (lasers)

• OSTI ID: 21437856
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 10 Vol. 29; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
COMPARATIVE EVALUATIONS
DATA
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
EVALUATION
EXPERIMENTAL DATA
FLUORINE COMPOUNDS
HALOGEN COMPOUNDS
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
INORGANIC COMPOUNDS
KINETICS
LASER RADIATION
LASERS
MOLECULES
NUMERICAL DATA
RADIATIONS
REACTION KINETICS
RELAXATION
SPECTRA
STIMULATED EMISSION