Characterizing the Hertz-VPM Polarimeter

Details Characterizing the Hertz-VPM Polarimeter Characterizing the Hertz-VPM Polarimeter

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...21116002k&link_type=abstract

American Astronomical Society, AAS Meeting #211, #160.02

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We present preliminary results from engineering tests conducted at Northwestern U. and the Submillimeter Telescope Observatory (SMTO) on Mt. Graham, AZ. The VPM provides a new method for modulating incoming polarization signals, using small linear translations instead of rotational motion. Our dual grid-mirror design has several advantages over the currently favored technology, the half-wave plate.
The VPM appears to successfully modulate submillimeter polarization, with high efficiencies and low instrumental polarization. We briefly discuss feasibility of use for air- and space-borne applications.

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