Studies of the effects of control bandwidth and dark-hole size on the HCIT contrast performance

Erkin Sidick; Stuart Shaklan; Kunjithapatham Balasubramanian; Eric Cady

doi:10.1117/12.2188210

16 September 2015 Studies of the effects of control bandwidth and dark-hole size on the HCIT contrast performance

Erkin Sidick, Stuart Shaklan, Kunjithapatham Balasubramanian, Eric Cady

Proceedings Volume 9605, Techniques and Instrumentation for Detection of Exoplanets VII; 96050H (2015) https://doi.org/10.1117/12.2188210
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

We have carried out both theoretical and experimental studies of the sensitivity of dark hole contrast to the control bandwidth and dark-hole dimensions in high-contrast broadband stellar coronagraphy. We have evaluated the performance of DM actuator solutions in the presence of occulting mask defects using one to five 2%-wide bands spanning a 10% bandpass. We have also investigated the dependence of the HCIT contrast performance on the size of dark-hole area including large dark holes formed at the Nyquist limit of the DM.

Citation Download Citation

Erkin Sidick, Stuart Shaklan, Kunjithapatham Balasubramanian, and Eric Cady "Studies of the effects of control bandwidth and dark-hole size on the HCIT contrast performance", Proc. SPIE 9605, Techniques and Instrumentation for Detection of Exoplanets VII, 96050H (16 September 2015); https://doi.org/10.1117/12.2188210

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