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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 15 — Jul. 24, 2006
  • pp: 6588–6594

Differentially detected coherent population trapping resonances excited by orthogonally polarized laser fields

Michael Rosenbluh, Vishal Shah, Svenja Knappe, and John Kitching  »View Author Affiliations


Optics Express, Vol. 14, Issue 15, pp. 6588-6594 (2006)
http://dx.doi.org/10.1364/OE.14.006588


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Abstract

We demonstrate the excitation and low-noise differential detection of a coherent population trapping (CPT) resonance with two modulated optical fields with orthogonal circular polarizations. When a microwave phase delay of λ/4 is introduced in the optical path of one of the fields, the difference in the power transmitted through the cell in each polarization shows a narrow, dispersive resonance. The differential detection allows a high degree of suppression of laser-induced noise and will enable nearly shot-noise-limited operation of atomic frequency references and magnetometers based on CPT.

© 2006 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.3690) Atomic and molecular physics : Line shapes and shifts
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: May 24, 2006
Revised Manuscript: July 6, 2006
Manuscript Accepted: July 10, 2006
Published: July 24, 2006

Citation
Michael Rosenbluh, Vishal Shah, Svenja Knappe, and John Kitching, "Differentially detected coherent population trapping resonances excited by orthogonally polarized laser fields," Opt. Express 14, 6588-6594 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-15-6588


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