Atom trapping and spectroscopy in cavity-generated optical potentials

Yun-Jhih Chen, Stefan Zigo, and Georg Raithel
Phys. Rev. A 89, 063409 – Published 10 June 2014

Abstract

We use a near-concentric optical cavity at 1064 nm to generate trapping potentials for cold atoms. The cavity exhibits nondegenerate Hermite-Gaussian modes. Using just a few-milliwatt trap laser power, the cavity readily generates one- and higher-dimensional optical traps that replicate the mode functions. We spectroscopically characterize the optical trapping potentials and laser-cooling limits under continuous loading conditions. We use absorption images to measure atom densities and to compare the spatial profiles of trapped-atom samples with calculated mode functions. Steady-state fluorescence images reveal bright radiation emerging from the ends of the elongated, cavity-trapped atom clouds, providing evidence for radiation guiding.

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  • Received 18 April 2014

DOI:https://doi.org/10.1103/PhysRevA.89.063409

©2014 American Physical Society

Authors & Affiliations

Yun-Jhih Chen, Stefan Zigo*, and Georg Raithel

  • Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA

  • *Present address: Department of Physics, Kansas State University, Manhattan, KS 66506.

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Issue

Vol. 89, Iss. 6 — June 2014

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