CaltechAUTHORS
  A Caltech Library Service

The Vector Vortex Coronagraph: sensitivity to central obscuration, low-order aberrations, chromaticism, and polarization

Mawet, Dimitri and Pueyo, Laurent and Moody, Dwight and Krist, John and Serabyn, Eugene (2010) The Vector Vortex Coronagraph: sensitivity to central obscuration, low-order aberrations, chromaticism, and polarization. In: Modern Technologies in Space- and Ground-based Telescopes and Instrumentation. Proceedings of SPIE. No.7739. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 773914. ISBN 978-0-81948-229-7. https://resolver.caltech.edu/CaltechAUTHORS:20150526-095007327

[img] PDF - Published Version
See Usage Policy.

511kB

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20150526-095007327

Abstract

The Vector Vortex Coronagraph is a phase-based coronagraph, one of the most efficient in terms of inner working angle, throughput, discovery space, contrast, and simplicity. Using liquid-crystal polymer technology, this new coronagraph has recently been the subject of lab demonstrations in the near-infrared, visible and was also used on sky at the Palomar observatory in the H and K bands (1.65 and 2.2 μm, respectively) to image the brown dwarf companion to HR 7672, and the three extra-solar planets around HR 8799. However, despite these recent successes, the Vector Vortex Coronagraph is, as are most coronagraphs, sensitive to the central obscuration and secondary support structures, low-order aberrations (tip-tilt, focus, etc), bandwidth (chromaticism), and polarization when image-plane wavefront sensing is performed. Here, we consider in detail these sensitivities as a function of the topological charge of the vortex and design features inherent to the manufacturing technology, and show that in practice all of them can be mitigated to meet specific needs.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.858240 DOIArticle
ORCID:
AuthorORCID
Mawet, Dimitri0000-0002-8895-4735
Pueyo, Laurent0000-0003-3818-408X
Additional Information:© 2010 Society of Photo-Optical Instrumentation Engineers (SPIE). July 19, 2010. This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration (NASA).
Funders:
Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
Subject Keywords:High contrast imaging, exoplanets, phase-mask coronagraphy, optical vortex, adaptive optics, wave-front control, small and large space-based telescopes, large and extremely large ground-based telescopes.
Series Name:Proceedings of SPIE
Issue or Number:7739
DOI:10.1117/12.858240
Record Number:CaltechAUTHORS:20150526-095007327
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150526-095007327
Official Citation:Dimitri Mawet ; Laurent Pueyo ; Dwight Moody ; John Krist and Eugene Serabyn "The Vector Vortex Coronagraph: sensitivity to central obscuration, low-order aberrations, chromaticism, and polarization", Proc. SPIE 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation, 773914 (July 19, 2010); doi:10.1117/12.858240
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57802
Collection:CaltechAUTHORS
Deposited By:INVALID USER
Deposited On:26 May 2015 20:33
Last Modified:10 Nov 2021 21:55

Repository Staff Only: item control page