Hybrid spin-exchange optical pumping of 3He.

Journal Article (Journal Article)

We demonstrate spin-exchange optical pumping of 3He using a "hybrid" K-Rb vapor mixture. The Rb atoms absorb light from a standard laser at 795 nm, then collisionally polarize the potassium atoms. Spin-exchange collisions of K and 3He atoms then transfer the angular momentum to the 3He with much greater efficiency than Rb-3He. For a K-rich vapor, the efficiency of the hybrid spin-exchange collisions approaches 1/4, an order of magnitude greater than achieved by pure Rb pumping. We present the first measurements of actual photon efficiencies (polarized nuclei produced per absorbed photon), and show that a new parasitic absorption process limits the total efficiencies for both hybrid and pure Rb pumping.

Full Text

Duke Authors

Cited Authors

  • Babcock, E; Nelson, I; Kadlecek, S; Driehuys, B; Anderson, LW; Hersman, FW; Walker, TG

Published Date

  • September 19, 2003

Published In

Volume / Issue

  • 91 / 12

Start / End Page

  • 123003 -

PubMed ID

  • 14525358

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.91.123003


  • eng

Conference Location

  • United States