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Proceedings Paper

The variable-delay polarization modulator
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Paper Abstract

Precise astronomical polarization measurements generally require the use of polarization modulation. We have developed a new modulator, the Variable-delay Polarization Modulator (VPM) which uses two modified Martin- Puplett interferometers to induce a physical path length difference between polarization components. This highly durable and efficient device can easily be adapted to a wide range of wavelengths and temperatures, making it well suited for air- and space-borne facilities. This paper discusses the basic modulator design and a comparison to the half-wave plate, as well as details of VPM tests conducted at the Submillimeter Telescope Observatory (SMTO).

Paper Details

Date Published: 27 June 2006
PDF: 11 pages
Proc. SPIE 6275, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 62751N (27 June 2006); doi: 10.1117/12.671927
Show Author Affiliations
M. Krejny, Northwestern Univ. (United States)
D. T. Chuss, NASA Goddard Space Flight Ctr. (United States)
G. Novak, Northwestern Univ. (United States)
G. M. Voellmer, NASA Goddard Space Flight Ctr. (United States)
E. J. Wollack, NASA Goddard Space Flight Ctr. (United States)
C. K. Walker, The Univ. of Arizona/Steward Observatory (United States)
M. Jackson, NASA Goddard Space Flight Ctr. (United States)
D. J. Benford, NASA Goddard Space Flight Ctr. (United States)
J. G. Staguhn, NASA Goddard Space Flight Ctr. (United States)
S. H. Moseley, NASA Goddard Space Flight Ctr. (United States)
C. Kulesa, The Univ. of Arizona/Steward Observatory (United States)
C. Y. Drouet d'Aubigny, The Univ. of Arizona/Steward Observatory (United States)
D. R. Golish, The Univ. of Arizona/Steward Observatory (United States)
R. F. Loewenstein, Yerkes Observatory, Univ. of Chicago (United States)


Published in SPIE Proceedings Vol. 6275:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington; William D. Duncan, Editor(s)

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