Efficient first-overtone CO laser frequency tuned within the spectral range of 2.5-4.2 um

Nikolai G. Basov; Gordon D. Hager; Andrei A. Ionin; Andrei A. Kotkov; Alexander K. Kurnosov; John E. McCord; Anatoly P. Napartovich; Leonid V. Seleznev; Nikolay G. Turkin

doi:10.1117/12.383465

24 April 2000 Efficient first-overtone CO laser frequency tuned within the spectral range of 2.5-4.2 μm

Nikolai G. Basov, Gordon D. Hager, Andrei A. Ionin, Andrei A. Kotkov, Alexander K. Kurnosov, John E. McCord, Anatoly P. Napartovich, Leonid V. Seleznev, Nikolay G. Turkin

Author Affiliations +

Proceedings Volume 4071, International Conference on Atomic and Molecular Pulsed Lasers III; (2000) https://doi.org/10.1117/12.383465
Event: International Conference on Atomic and Molecular Pulsed Lasers III, 1999, Tomsk, Russian Federation

Abstract

Output characteristics of a pulsed e-beam controlled discharge laser operating at the first-overtone (FO) transitions ((Delta) V equals 2) of CO molecule have been studied both experimentally and theoretically. Various sets of dielectric mirrors with high reflectivity in the range of the overtone spectrum have been used for the laser resonator. Multiwavelength lasing has been obtained in the wide spectral range of 2.5 - 4.1 micrometers on vibrational transitions from 6 yields 4 up to 37 yields 35. Maximum output efficiency 11%, the highest of eve laser, has been experimentally obtained for the broad band multiline FO CO laser. Maximum specific output energy (SOE) is 50 J/I Amagat. FO CO lasing was observed within an initial gas temperature interval of 100 - 220 K. Spectral characteristics of the overtone laser operating on a selected set of vibrational bands have been analyzed theoretically. Theoretical calculations based on the experimental data predict that multiline FO CO laser efficiency can be increased up to 20%. The experiments with pulsed FO CO laser using diffraction grating as a frequency selective element demonstrated a feasibility of a development of frequency tunable single line pulsed FO CO laser. Tunable FO CO lasing on wavelengths from 2.7 up to 4.2 micrometers corresponding to vibrational transitions from 13 yields 11 up to 38 yields 36 was obtained. The maximum SOE came up to 2.8 J/I Amagat, single line output efficiency being up to 0.6%.

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Nikolai G. Basov, Gordon D. Hager, Andrei A. Ionin, Andrei A. Kotkov, Alexander K. Kurnosov, John E. McCord, Anatoly P. Napartovich, Leonid V. Seleznev, and Nikolay G. Turkin "Efficient first-overtone CO laser frequency tuned within the spectral range of 2.5-4.2 μm", Proc. SPIE 4071, International Conference on Atomic and Molecular Pulsed Lasers III, (24 April 2000); https://doi.org/10.1117/12.383465

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KEYWORDS

Gas lasers

Mirrors

Laser resonators

Carbon monoxide

Diffraction gratings

Reflectivity

Solar thermal energy

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