Pulsed laser operating on the first vibrational overtone of the CO molecule in the 2.5-4.2-{mu}m range: 1. Multifrequency lasing

Journal Article · Sat Sep 30 04:00:00 EDT 2000 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2000V030N09ABEH001809· OSTI ID:21442763

Basov, N G; Ionin, Andrei A; Kotkov, A A; Seleznev, L V ^[1]; Kurnosov, A K; Napartovich, A P; Turkin, N G ^[2]; McCord, J E; Hager, G D ^[3]

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1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2. State Research Center of Russian Federation 'Troitsk Institute for Innovation and Fusion Research', Troitsk, Moscow Region (Russian Federation)
3. US Air Force Research Laboratories, Kirtland, New Mexico (United States)

Characteristics of a pulsed, multifrequency electroionisation CO laser operating on the first vibrational overtone of the CO molecule are studied experimentally and theoretically. It is shown experimentally that a pulsed, multifrequency overtone CO laser is an efficient source of coherent radiation in the 2.5-4.1-{mu}m region whose specific output reaches 50 J l{sup -1} amagat{sup -1} and the electro-optical efficiency amounts to 11 %. A theoretical analysis based on experimental data shows the feasibility of obtaining overtone emission with efficiency as high as {approx}20 %. The alternation of the intensity of vibrational bands in the overtone CO laser is discussed. This effect is caused by the cascade mechanism of formation of the emission spectrum. The comparison of experimental data with calculations showed that they agree well with respect to spectral and energy characteristics of the overtone CO laser. Moreover, it revealed the necessity of refinement of the kinetic model of the active medium of the CO laser for obtaining an adequate description of time parameters of a laser pulse. (lasers)

• OSTI ID: 21442763
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 9 Vol. 30; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COHERENT RADIATION
COMPARATIVE EVALUATIONS
DATA
EFFICIENCY
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
ENERGY LEVELS
EVALUATION
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
LASERS
MOLECULES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PULSES
RADIATIONS
SPECTRA
THEORETICAL DATA
VIBRATIONAL STATES