Mid-Infrared Adaptive Nulling for the Detection of Earthlike Exoplanets

Details Mid-Infrared Adaptive Nulling for the Detection of Earthlike Exoplanets Mid-Infrared Adaptive Nulling for the Detection of Earthlike Exoplanets

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010pasp..122...85p&link_type=abstract

Publications of the Astronomical Society of the Pacific, Volume 122, issue 887, pp.85-92

Astronomy and Astrophysics

Astronomy

3

Astronomical Instrumentation

Scientific paper

Evidence of the habitability of nearby exoplanets could be found with future space missions using the technique of nulling interferometry. A nulling interferometer selectively suppresses the glare of starlight while allowing the light from planets to be detected. Here we report the first demonstrations of broadband mid-infrared nulling at the level required to enable such a space mission. In three separate 6 hr measurements, mid-infrared nulls were demonstrated at a mean level less than 1.0×10 using a 34% bandwidth centered at a wavelength of 10 μm. This was accomplished by "adaptive nulling," in which a deformable mirror is tuned to minimize wavelength-dependent phase and intensity differences in the interferometer.

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