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Polarization Aberration in Astronomical Telescopes

Chipman, Russell A. and Lam, Wai Sze Tiffany and Breckinridge, James (2015) Polarization Aberration in Astronomical Telescopes. In: Polarization Science and Remote Sensing VII. Proceedings of SPIE. No.9613. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 96130H. ISBN 9781628417791.

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The point spread function (PSF) for astronomical telescopes and instruments depends not only on geometric aberrations and scalar wave diffraction, but also on the apodization and wavefront errors introduced by coatings on reflecting and transmitting surfaces within the optical system. The functional form of these aberrations, called polarization aberrations, result from the angles of incidence and the variations of the coatings as a function of angle. These coatings induce small modifications to the PSF, which consists of four separate components, two nearly Airy-disk PSF components, and two faint components, we call ghost PSF components, with a spatial extent about twice the size of the diffraction limited image. As the specifications of optical systems constantly improve, these small effects become increasingly important. It is shown how the magnitude of these ghost PSF components, at ~10^(-5) in the example telescope, can interfere with exoplanet detection with coronagraphs.

Item Type:Book Section
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Breckinridge, James0000-0002-9488-098X
Additional Information:© 2015 SPIE.
Subject Keywords:Polarization, imaging, polarization aberration, polarization ray tracing
Series Name:Proceedings of SPIE
Issue or Number:9613
Record Number:CaltechAUTHORS:20160108-124749706
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Official Citation:Russell A. Chipman ; Wai Sze T. Lam ; James Breckinridge; Polarization aberration in astronomical telescopes. Proc. SPIE 9613, Polarization Science and Remote Sensing VII, 96130H (September 3, 2015); doi:10.1117/12.2188921
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63513
Deposited By: Tony Diaz
Deposited On:09 Jan 2016 02:21
Last Modified:10 Nov 2021 23:17

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