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

Erkin Sidick; Stuart Shaklan; Amir Give'on; Brian Kern

doi:10.1117/12.894453

15 September 2011 Studies of the effects of optical system errors on the HCIT contrast performance

Erkin Sidick, Stuart Shaklan, Amir Give'on, Brian Kern

Proceedings Volume 8151, Techniques and Instrumentation for Detection of Exoplanets V; 815106 (2011) https://doi.org/10.1117/12.894453
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

Erkin Sidick, Stuart Shaklan, Amir Give'on, and Brian Kern "Studies of the effects of optical system errors on the HCIT contrast performance", Proc. SPIE 8151, Techniques and Instrumentation for Detection of Exoplanets V, 815106 (15 September 2011); https://doi.org/10.1117/12.894453

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