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Studies of the Effects of Control Bandwidth and Dark-Hole Size on the HCIT Contrast PerformanceWe 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.
Document ID
20170007037
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Sidick, Erkin
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shaklan, Stuart
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Balasubramanian, Kunjithapatha
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cady, Eric
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 1, 2017
Publication Date
August 9, 2015
Subject Category
Optics
Meeting Information
Meeting: SPIE Optics + Photonics
Location: San Diego, CA
Country: United States
Start Date: August 9, 2015
End Date: August 13, 2015
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other
Keywords
exoplanets
high-contrast imaging
coronagraphy
adaptive optics
space telescopes

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