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Combining vector-phase coronagraphy with dual-beam polarimetry

Snik, Frans and Otten, Gilles and Kenworthy, Matthew and Mawet, Dimitri and Escuti, Michael (2014) Combining vector-phase coronagraphy with dual-beam polarimetry. In: Ground-based and Airborne Instrumentation for Astronomy V. Proceedings of SPIE. No.9147. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 91477U. ISBN 9780819496157.

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Utilizing the so-called vector phase of polarized light, both focal-plane coronagraphs (e.g. the Vector Vortex Coronagraph) and pupil-plane coronagraphs (e.g. the vector Apodizing Phase Plate) are powerful components for high-contrast imaging. These coronagraphs can be built and optimized with polarization techniques and liquid crystal technology, that enable patterning at the micron level and furnish broad-band performance. The contrast between the residual starlight and the (polarized) reflected light off exoplanets can be further bridged by incorporating sensitive, dual-beam imaging polarimetry. As vector-phase coronagraphs use polarizers to enhance their performance, we introduce optimally integrated solutions that combine advanced coronagraphy and polarimetry. For both the VVC and the vAPP we present polarization beam-splitting concepts, with polarization analyzers either behind or in front of the coronagraphic optics. We discuss design solutions for the implementation of polarization optics, and set the stage for a trade-off between the improvement of coronagraphic and polarimetric performance and the ensuing degradation on the high-contrast imaging performance due to wavefront errors.

Item Type:Book Section
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Mawet, Dimitri0000-0002-8895-4735
Additional Information:© 2014 SPIE.
Subject Keywords:coronagraphy, polarimetry, vector phase, high-contrast imaging
Series Name:Proceedings of SPIE
Issue or Number:9147
Record Number:CaltechAUTHORS:20150519-145718105
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Official Citation:Frans Snik ; Gilles Otten ; Matthew Kenworthy ; Dimitri Mawet and Michael Escuti "Combining vector-phase coronagraphy with dual-beam polarimetry", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91477U (August 6, 2014); doi:10.1117/12.2055452;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57674
Deposited On:19 May 2015 23:52
Last Modified:10 Nov 2021 21:53

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