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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 1 — Jan. 1, 2011
  • pp: 49–51

Direct frequency-comb spectroscopy of a dipole-forbidden clock transition in trapped Ca + 40 ions

Anne Lisa Wolf, Jonas Morgenweg, Jeroen C. J. Koelemeij, Steven A. van den Berg, Wim Ubachs, and Kjeld S. E. Eikema  »View Author Affiliations


Optics Letters, Vol. 36, Issue 1, pp. 49-51 (2011)
http://dx.doi.org/10.1364/OL.36.000049


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Abstract

We demonstrate direct frequency-comb (FC) spectroscopy of the dipole-forbidden 4 s 2 S 1 / 2 3 d 2 D 5 / 2 transition in trapped Ca + 40 ions using an unamplified FC laser. The excitation is detected with nearly 100% efficiency using a shelving scheme in combination with single-ion imaging. The method demonstrated here has the potential to reach hertz-level accuracy, if a hertz-level linewidth FC is used in combination with confinement in the Lamb–Dicke regime.

© 2011 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(140.7090) Lasers and laser optics : Ultrafast lasers
(300.6520) Spectroscopy : Spectroscopy, trapped ion

ToC Category:
Spectroscopy

History
Original Manuscript: September 1, 2010
Revised Manuscript: October 30, 2010
Manuscript Accepted: November 29, 2010
Published: December 23, 2010

Citation
Anne Lisa Wolf, Jonas Morgenweg, Jeroen C. J. Koelemeij, Steven A. van den Berg, Wim Ubachs, and Kjeld S. E. Eikema, "Direct frequency-comb spectroscopy of a dipole-forbidden clock transition in trapped 40Ca+ ions," Opt. Lett. 36, 49-51 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-1-49


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