28 January 2016 Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA
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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).
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Brian Kern, Brian Kern, Olivier Guyon, Olivier Guyon, Ruslan Belikov, Ruslan Belikov, Daniel Wilson, Daniel Wilson, Richard Muller, Richard Muller, Erkin Sidick, Erkin Sidick, Bala Balasubramanian, Bala Balasubramanian, John Krist, John Krist, Ilya Poberezhskiy, Ilya Poberezhskiy, Hong Tang, Hong Tang, } "Phase-induced amplitude apodization complex mask coronagraph mask fabrication, characterization, and modeling for WFIRST-AFTA," Journal of Astronomical Telescopes, Instruments, and Systems 2(1), 011014 (28 January 2016). https://doi.org/10.1117/1.JATIS.2.1.011014 . Submission:
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