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Appl Opt. 2006 Apr 20;45(12):2749-54.

Deep nulling of laser light with a single-mode-fiber beam combiner.

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  • 1Jet Propulsion Laboratory, California Institute of Technology, Pasadena 91109, USA. phaguena@eso.org


The detection of faint companions to bright stars requires the development of very-high-contrast-ratio detection techniques such as nulling interferometry. Here we present, to our knowledge, the first experimental test of a novel beam-combination method, which is based on coupling the light at the center of a dual-aperture interference pattern into a single-mode fiber. Using such a "fiber nuller" approach, a visible He-Ne laser has been stably nulled to as low as 1.3x10(-6), thus validating the approach.

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