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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 20, Iss. 10 — Oct. 1, 2003
  • pp: 2068–2074

Comparison of metastability-exchange optical pumping sources

Thomas R. Gentile, Michael E. Hayden, and Michael J. Barlow  »View Author Affiliations


JOSA B, Vol. 20, Issue 10, pp. 2068-2074 (2003)
http://dx.doi.org/10.1364/JOSAB.20.002068


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Abstract

The efficiencies of two ytterbium (Yb) fiber lasers for metastability-exchange optical pumping are compared with that of an arc-lamp-pumped neodymium-doped lanthanum magnesium hexaluminate laser. Specifically, we report a careful comparison of the 3He nuclear polarizations and polarization rates obtained with each laser, which were carried out for three sealed glass cells filled with low-pressure 3He or 3He–4He mixtures. The two Yb systems are (1) a 1083-nm diode oscillator coupled to a Yb-doped fiber amplifier and (2) an all-fiber system consisting of a Yb-doped fiber oscillator followed by a Yb-doped fiber amplifier. Essentially no difference was observed between the efficiency of the neodymium-doped lanthanum magnesium hexaluminate laser and the diode/fiber system. In comparison, the all-fiber laser produced a 0%–5% lower polarization and a 0%–35% lower polarization rate than the other two lasers, depending upon the specific experimental conditions. Absorption and spectral line-shape measurements suggest that this difference can be attributed to the spectral linewidth of the particular all-fiber laser that was tested.

© 2003 Optical Society of America

OCIS Codes
(000.2190) General : Experimental physics
(000.2690) General : General physics
(140.5560) Lasers and laser optics : Pumping

Citation
Thomas R. Gentile, Michael E. Hayden, and Michael J. Barlow, "Comparison of metastability-exchange optical pumping sources," J. Opt. Soc. Am. B 20, 2068-2074 (2003)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-20-10-2068

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