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Proceedings Paper

Optical interferometric polarimetry
Author(s): Nicholas M. Elias
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Paper Abstract

In this paper, I discuss the need for optical interferometric polarimetry and demonstrate that it is possible with existing technology. Coherent averaging is required; it may be accomplished simply with the addition of a non-polarizing beam splitter after the beam combiner. I define three observables and their corresponding output vectors. One vector is identical to the normalized Stokes vector obtained from classical polarimetry, while the other two are related to the Stokes visibility vector. Calibration of the instrument requires only separate zero-spacing observations of calibrator stars on each of the individual arms - no interferometric measurements are necessary. For a large class of objects, it is possible to create images in all Stokes parameters with a single variable-length baseline.

Paper Details

Date Published: 14 February 2003
PDF: 9 pages
Proc. SPIE 4843, Polarimetry in Astronomy, (14 February 2003); doi: 10.1117/12.458613
Show Author Affiliations
Nicholas M. Elias, U.S. Naval Observatory (United States)

Published in SPIE Proceedings Vol. 4843:
Polarimetry in Astronomy
Silvano Fineschi, Editor(s)

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