Broadband phase and intensity compensation with a deformable mirror for an interferometric nuller |
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| Authors: | Peters Robert D Lay Oliver P Jeganathan Muthu |
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| Affiliation: | Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109, USA. Robert.D.Peters@jpl.nasa.gov |
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| Abstract: | Nulling interferometry has been proposed for the direct detection of Earth-like planets. Deep stable nulls require careful control of the relative intensity and phase of the beams that are being combined. We present a novel compensator, the Adaptive Nuller, that corrects the intensity and phase as a function of wavelength from 8 to 12 microm using a deformable mirror. This compensator has been used to produce rejection ratios of 82,000:1 over a bandwidth of 3.2 microm centered around 10 microm. |
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