Gain dynamics in a pulsed laser amplifier on CO-He, CO-N{sub 2} and CO-O{sub 2} gas mixtures
- P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
Small-signal gain (SSG) dynamics G(t) in the active medium of a pulsed laser amplifier operating on the v+1{yields}vP(J) vibrational-rotational transitions of the CO molecule, including high (v > 15) vibrational transitions, is studied experimentally. It is demonstrated that as the vibrational number increases from 7 to 31, G changes with time slower, while G{sub max} decreases in this case by three times. It is found that at a fixed value of v the rate of the SSG rise increases with increasing the rotational number J > 6. It is shown that in oxygen-containing gas mixtures (CO:O{sub 2} = 1:19) the value of G{sub max} at low vibrational levels (for v < 13) can substantially exceed G{sub max} in mixtures containing nitrogen (CO:N{sub 2} = 1:19) instead of oxygen. It is found that the efficiency (47%) of a CO laser on mixtures with a high concentration of oxygen considerably exceeds the efficiency (30%) of a CO laser operating on a nitrogen-containing mixture. (active media)
- OSTI ID:
- 21466608
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 37, Issue 2; Other Information: DOI: 10.1070/QE2007v037n02ABEH013166; ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
CARBON MONOXIDE
EFFICIENCY
GAIN
HELIUM
LASERS
MIXTURES
MOLECULES
NITROGEN
OXYGEN
SIGNALS
AMPLIFICATION
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
DISPERSIONS
ELECTRONIC EQUIPMENT
ELEMENTS
EQUIPMENT
FLUIDS
GASES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
RARE GASES