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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2014/41745
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| Title: | Path length control in a nulling coronagraph with a MEMS deformable mirror and a calibration interferometer. |
| Authors: | Rao, Shanti R.
Wallacea, J. Kent
Samuele, Rocco
Chakrabarti, Supriya
Cook, Timothy
Hicks, Brian
Jung, Paul
Lane, Benjamin
Levine, B. Martin
Mendillo, Chris
Schmidtlin, Edouard
Shao, Mike
Stewart, Jason B. |
| Keywords: | nulling coronagraph
extrasolar planets
calibration interferometers
MEMS adaptive optics
deformable mirrors |
| Issue Date: | 23-Jan-2008 |
| Publisher: | Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2008. |
| Citation: | Photonics West, San Jose, California, January 23, 2008. |
| Abstract: | We report progress on a nulling coronagraph intended for direct imaging of extrasolar planets. White light is suppressed
in an interferometer, and phase errors are measured by a second interferometer. A 1020-pixel MEMS deformable mirror in the first interferometer adjusts the path length across the pupil. A feedback control system reduces deflections of the deformable mirror to order of 1 nm rms. |
| URI: | http://hdl.handle.net/2014/41745 |
| Appears in Collections: | JPL TRS 1992+
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