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Proceedings Paper

Picometer differential-phase measurements in the laboratory
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Paper Abstract

We describe the results of laboratory experiments, using a mock-up stellar interferometer equipped with specialized hardware, undertaken to measure differential-phase to considerable precision (0.1 mrad) over an octave of bandwidth in the infrared. Differential-phase is a precision technique that can detect subtle temporal changes in the relative (color-dependent) photocenter of an astronomical target - making it useful for direct detection of some hot-Jupiter planets from the ground. The set up described herein was built as part of the Keck Interferometer project.

Paper Details

Date Published: 28 June 2006
PDF: 10 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 62682X (28 June 2006); doi: 10.1117/12.672619
Show Author Affiliations
Gautam Vasisht, Jet Propulsion Lab. (United States)
European Southern Observatory (Germany)
E. Robert Ligon, Jet Propulsion Lab. (United States)
Erik E. Bloemhof, Jet Propulsion Lab. (United States)
M. Mark Colavita, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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