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Effect of optical saturation on hyperfine intensities in optogalvanic spectroscopy

Journal Article · · J. Opt. Soc. Am. B: Opt. Phys.; (United States)
The hyperfine structure of the 22 125-cm/sup -1/, /sup 2/D/sup degree//sub 3/2/ reverse arrow /sup 2/D/sub 3/2/ lutetium transition has been examined by both Fourier transform emission and laser optogalvanic spectroscopy. The component intensities of the Fourier-transform spectrum closely agree with classical intensities. The optogalvanic spectra show progressively larger deviations from classical intensities as the laser power is increased. Introduction of a single optical saturation parameter into the intensity formula is sufficient to fit the observed intensities even at high laser powers. These spectra were used to derive accurate values for the /sup 175/Lu line origin, the upper-state hyperfine constants of /sup 175/ Lu, and the isotope shift between /sup 176/Lu and /sup 175/ Lu.
Research Organization:
Chemistry Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
5772233
Journal Information:
J. Opt. Soc. Am. B: Opt. Phys.; (United States), Journal Name: J. Opt. Soc. Am. B: Opt. Phys.; (United States) Vol. 2:6; ISSN JOBPD
Country of Publication:
United States
Language:
English