Special Section on WFIRST-AFTA Coronagraphs

Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA

[+] Author Affiliations
Brian Kern, Daniel Wilson, Richard Muller, Erkin Sidick, Bala Balasubramanian, John Krist, Ilya Poberezhskiy, Hong Tang

Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91016, United States

Olivier Guyon

University of Arizona, Department of Astronomy and Steward Observatory, 933 North Cherry Avenue, Tucson, Arizona 85721, United States

Subaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place, Hilo 96720, United States

Ruslan Belikov

NASA Ames Research Center, Moffett Field, California 94035, United States

J. Astron. Telesc. Instrum. Syst. 2(1), 011014 (Jan 28, 2016). doi:10.1117/1.JATIS.2.1.011014
History: Received June 1, 2015; Accepted December 22, 2015
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Abstract.  This work describes the fabrication, characterization, and modeling of a second-generation occulting mask for a phase-induced amplitude apodization complex mask coronagraph, designed for use on the WFIRST-AFTA mission. The mask has many small features (∼micron lateral scales) and was fabricated at the Jet Propulsion Laboratory Microdevices Laboratory, then characterized using a scanning electron microscope, atomic force microscope, and optical interferometric microscope. The measured fabrication errors were then fed to a wavefront control model which predicts the contrast performance of a full coronagraph. The expected coronagraphic performance using this mask is consistent with observing 15 planetary targets with WFIRST-AFTA in a reasonable time (<1  day/target).

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Brian Kern ; Olivier Guyon ; Ruslan Belikov ; Daniel Wilson ; Richard Muller, et al.
"Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA", J. Astron. Telesc. Instrum. Syst. 2(1), 011014 (Jan 28, 2016). ; http://dx.doi.org/10.1117/1.JATIS.2.1.011014


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