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Experimental Progress in Deep and Broadband Infrared Nulling for TPF-I

Published online by Cambridge University Press:  02 May 2006

J. Kent Wallace ,
Randall Bartos ,
Robert Gappinger ,
Frank Loya ,
Steve Moser  and
John Negron
J. Kent Wallace
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA email: James.K.Wallace@jpl.nasa.gov
Randall Bartos
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA email: James.K.Wallace@jpl.nasa.gov
Robert Gappinger
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA email: James.K.Wallace@jpl.nasa.gov
Frank Loya
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA email: James.K.Wallace@jpl.nasa.gov
Steve Moser
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA email: James.K.Wallace@jpl.nasa.gov
John Negron
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, USA email: James.K.Wallace@jpl.nasa.gov
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Abstract

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Our activities are focused upon the experimental demonstration of deep nulling in the mid-IR over a wide bandpass. Specifically, our near-term goal is demonstrating a contrast of 10$^{-6}$ at 10 $\mu$m with a 25% spectral bandwidth. To meet this goal, several areas of technology development are required. These include: single-mode infrared fibers, bright infrared sources, laser path-length and tip/tilt metrology, and improvements to detection sensitivity. Progress in each of these areas of technical development will be reviewed as well as their impact on the overarching technical milestones.

Keywords

techniques: interferometricinstrumentation: detectorsinfrared: general