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arXiv:physics/0107011 · Journal of Optics B Quantum and Semiclassical Optics

A single hollow-beam optical trap for cold atoms

S. A. Kulin, S. Aubin, Steven Christe, Boris Peker, S. L. Rolston, Luis A. Orozco

Published Oct 15, 2001• 53 citations
arXivHTMLPDF

Abstract

We present an optical trap for atoms which we have developed for precision spectroscopy measurements. Cold atoms are captured in a dark region of space inside a blue-detuned hollow laser beam formed by an axicon. We analyse the light potential in a ray optics picture and experimentally demonstrate trapping of laser-cooled metastable xenon atoms.

DOI
10.1088/1464-4266/3/6/301

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We present an optical trap for atoms which we have developed for precision spectroscopy measurements. Cold atoms are captured in a dark region of space inside a blue-detuned hollow laser beam formed by an axicon. We analyse the light potential in a ray optics picture and experimentally demonstrate trapping of laser-cooled metastable xenon atoms.
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Summary form only given. One of the more promising proposals for guiding and focusing neutral atoms involves dark hollow laser beams. When detuned blue of resonance, the dipole force the atoms feel in the light confines them to the dark core of the beam where they can be transported with minimal interaction with the light. Dark hollow beams show promise for long distance transport of large numbers of ultra cold atoms, making them a strong competitor with hollow-core fiber atom guides. In this presentation we describe a simple way to construct an all-light atom tunnel with a series of axicons and a moderately powered diode laser beam.
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