21 February 2014 Single-element nulling interferometer for extra-solar planet detection
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J. of Applied Remote Sensing, 8(1), 084996 (2014). doi:10.1117/1.JRS.8.084996
Abstract
Nulling interferometry is a technique for darkening the field generated by a star relative to its surroundings by destructive interference. We describe a nulling interferometer incorporating a single beam-splitter (BS) cube. The device resembles a two-arm interferometer in which the arms are together in one collimated beam, and the two beam halves interfere with the help of the BS cube. By introducing an extra π/2 -phase difference between the two beam halves, it is possible to achieve destructive interference of the star with itself, while the off-axis image of the planet remains unchanged. An experimental setup is constructed to demonstrate the nulling features of this interferometer. A star and a planet solar system are simulated to prove its performance.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
José A. Ferrari, Jorge L. Flores, Gonzalo Paez, Erna M. Frins, "Single-element nulling interferometer for extra-solar planet detection," Journal of Applied Remote Sensing 8(1), 084996 (21 February 2014). http://dx.doi.org/10.1117/1.JRS.8.084996
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KEYWORDS
Stars

Interferometers

Planets

Destructive interference

Nulling interferometry

Exoplanetary science

Telescopes

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