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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1991),
  • paper QMA5

Hyperfine spectroscopy of 81Kr and 85Kr

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Abstract

Hyperfine constants and isotope shifts were measured for the 1s5-2p9) and 1s5-4d4 transitions in 81Kr and for the 1s5--2p9, 1s5-2p7, and ls5-2P0, transitions in 85Kr in a weak glow discharge. A single-frequency dye laser was used to perform saturation spectroscopy with fluorescence detection for all but one transition. For the 1s5-4d4 transition, two-color two-photon excitation was accomplished with a single-frequency dye laser and a frequency-narrowed GaAlAs diode laser. This two-photon excitation gave the narrowest lines, the largest signal-to-noise ratio, and the least background of any of the transitions studied in this work. The freedom to resonantly enhance selected 81Kr lines and diminish the much stronger lines from the even krypton isotopes aided identification and assignment of the 81Kr spectra (see Fig. 1).

© 1991 Optical Society of America

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