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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 9, Iss. 12 — Dec. 1, 1992
  • pp: 2137–2141

Detection of atomic oxygen and hydrogen in the vacuum UV using a frequency-doubled, Raman-shifted dye laser

P. Bogen, Ph. Mertens, E. Pasch, and H. F. Döbele  »View Author Affiliations

JOSA B, Vol. 9, Issue 12, pp. 2137-2141 (1992)

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Tunable radiation between 130.6 and 121.5 nm has been generated with a frequency-doubled dye laser, the wavelength of which has been shifted by stimulated Raman scattering in molecular hydrogen. With the eighth and ninth anti-Stokes Raman lines (energies > 0.1 μJ, pulse length < 2 ns), the densities of atomic oxygen and hydrogen, produced by dissociation of O2 or H2 on a hot tungsten wire or in sputtering devices, have been measured by resonance fluorescence at λ = 130.2 nm and at λ = 121.5 nm, respectively. The detection limit in our experimental setup has been estimated near 107/cm3. The corresponding spectral profiles have been determined with a resolution of at best 0.1 cm−1. With a Raman cell cooled in liquid nitrogen, the shift and broadening of the 8th anti-Stokes line have been measured as a function of the hydrogen pressure between 300 and 1000 mbars, through the apparent profile of the O i line.

© 1992 Optical Society of America

Original Manuscript: December 18, 1991
Revised Manuscript: July 1, 1992
Published: December 1, 1992

P. Bogen, E. Pasch, H. F. Döbele, and Ph. Mertens, "Detection of atomic oxygen and hydrogen in the vacuum UV using a frequency-doubled, Raman-shifted dye laser," J. Opt. Soc. Am. B 9, 2137-2141 (1992)

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