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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 2 — Jan. 15, 2014
  • pp: 409–412

Ion current as a precise measure of the loading rate of a magneto-optical trap

W. Jiang, K. Bailey, Z.-T. Lu, P. Mueller, T. P. O’Connor, and R. Purtschert  »View Author Affiliations

Optics Letters, Vol. 39, Issue 2, pp. 409-412 (2014)

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We have demonstrated that the ion current resulting from collisions between metastable krypton atoms in a magneto-optical trap can be used to precisely measure the trap loading rate. We measured both the ion current of the abundant isotope Kr83 (isotopic abundance=11%) and the single-atom counting rate of the rare isotope Kr85 (isotopic abundance1×1011), and found the two quantities to be proportional at a precision level of 0.9%. This work results in a significant improvement in using the magneto-optical trap as an analytical tool for noble-gas isotope ratio measurements, and will benefit both atomic physics studies and applications in the earth sciences.

© 2014 Optical Society of America

OCIS Codes
(020.2070) Atomic and molecular physics : Effects of collisions
(020.7010) Atomic and molecular physics : Laser trapping
(260.3230) Physical optics : Ionization

ToC Category:
Atomic and Molecular Physics

Original Manuscript: October 16, 2013
Manuscript Accepted: November 23, 2013
Published: January 15, 2014

W. Jiang, K. Bailey, Z.-T. Lu, P. Mueller, T. P. O’Connor, and R. Purtschert, "Ion current as a precise measure of the loading rate of a magneto-optical trap," Opt. Lett. 39, 409-412 (2014)

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