Direct detection of singlet oxygen O{sub 2}(a{sup 1} {Delta}{sub g}) by absorption at the a{sup 1} {Delta}{sub g} {yields} b{sup 1} {Sigma}{sub g}{sup +} transition using intracavity laser spectroscopy

Journal Article · Mon Apr 30 00:00:00 EDT 2001 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2001V031N04ABEH001952· OSTI ID:21442824

Pazyuk, V S; Podmar'kov, Yu P; Raspopov, N A; Frolov, M P ^[1]

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1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

The absorption spectrum of singlet oxygen O{sub 2}(a{sup 1} {Delta}{sub g}) is detected in a gas phase at the a{sup 1} {Delta}{sub g} {yields} b{sup 1} {Sigma}{sub g}{sup +} transition by the method of intracavity laser spectroscopy using a broad-band Co : MgF{sub 2} laser emitting 200-{mu}s pulses at a wavelength 1.91 {mu}m. In the case of Doppler broadening of absorption lines at room temperature, the sensitivity of detection of O{sub 2} (a{sup 1} {Delta}{sub g}) is {approx} (2 - 5) x 10{sup 14} cm{sup -3} . It is shown that the gas temperature can be calculated from the dependence of absorption cross sections for individual lines on the rotational quantum number. (laser applications and other topics in quantum electronics)

• OSTI ID: 21442824
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 31, Issue 4; Other Information: DOI: 10.1070/QE2001v031n04ABEH001952; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ABSORPTION
ABSORPTION SPECTRA
CROSS SECTIONS
DETECTION
DOPPLER BROADENING
LASER CAVITIES
LASER SPECTROSCOPY
LASERS
MAGNESIUM FLUORIDES
OXYGEN
PULSES
SENSITIVITY
TEMPERATURE RANGE 0273-0400 K
WAVELENGTHS
ALKALINE EARTH METAL COMPOUNDS
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LINE BROADENING
MAGNESIUM COMPOUNDS
NONMETALS
SORPTION
SPECTRA
SPECTROSCOPY
TEMPERATURE RANGE