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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 23 — Nov. 13, 2006
  • pp: 10976–10983

Miniature fluorescence detector for single atom observation on a microchip

Akifumi Takamizawa, Tilo Steinmetz, Rémi Delhuille, Theodor W. Hänsch, and Jakob Reichel  »View Author Affiliations


Optics Express, Vol. 14, Issue 23, pp. 10976-10983 (2006)
http://dx.doi.org/10.1364/OE.14.010976


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Abstract

We explore the feasibility of single atom detection on an atom chip by using a tiny fluorescence detector mounted on the chip. Resonant fluorescence from a trapped ultracold atom will be collected with a miniature aspheric lens and taken out of a vacuum chamber through a fiber. During detection, the atom can be held at the focus of the detector with a dipole trapping beam introduced through the same fiber. We have experimentally determined the optical performance of such a detector, taking into account effects such as stray light from the dipole trapping beam and chromatic aberration. The collection efficiency for isotropically emitted radiation is experimentally obtained to be 2.5%. From this, it is estimated that the fluorescence emitted from a single Rb atom will produce a photon count rate of 4.7×104 Hz, which is much larger than the shot noise limited background fluctuations.

© 2006 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(040.1880) Detectors : Detection
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(140.3320) Lasers and laser optics : Laser cooling

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: June 23, 2006
Revised Manuscript: September 7, 2006
Manuscript Accepted: September 11, 2006
Published: November 13, 2006

Citation
Akifumi Takamizawa, Tilo Steinmetz, Rémi Delhuille, Theodor W. Hänsch, and Jakob Reichel, "Miniature fluorescence detector for single atom observation on a microchip," Opt. Express 14, 10976-10983 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-23-10976


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