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Proceedings Paper

Studies of the effects of optical system errors on the HCIT contrast performance
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Paper Abstract

The High Contrast Imaging Testbed (HCIT) at the Jet Propulsion Laboratory employs a broadband wavefront correction algorithm called Electric Field Conjugation (EFC) to obtain the required 10-10 contrast. This algorithm works with one deformable mirror (DM) to estimate the electric-field to be controlled, and with one or multiple DM's to create a "darkhole" in a predefined region of the image plane where terrestrial planets would be found. We have investigated the effects of DM actuator errors and the optic position errors on the efficiency of the EFC algorithm in a Lyot coronagraph configuration. The structural design of the optical system as well as the parameters of various optical elements used in the analysis are drawn from those of the HCIT system that have been implemented with one DM. The simulation takes into account the surface errors of various optical elements. Results of some of these studies have been verified by actual measurements.

Paper Details

Date Published: 15 September 2011
PDF: 12 pages
Proc. SPIE 8151, Techniques and Instrumentation for Detection of Exoplanets V, 815106 (15 September 2011); doi: 10.1117/12.894453
Show Author Affiliations
Erkin Sidick, Jet Propulsion Lab. (United States)
Stuart Shaklan, Jet Propulsion Lab. (United States)
Amir Give'on, Jet Propulsion Lab. (United States)
Brian Kern, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 8151:
Techniques and Instrumentation for Detection of Exoplanets V
Stuart Shaklan, Editor(s)

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