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 04:00:00 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.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 4 Vol. 31; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

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