28 July 2014 Novel infrared polarimeter for the ESO CRIRES+ instrument
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Abstract
The CRIRES infrared spectrograph at the European Southern Observatory (ESO) Very Large Telescope (VLT) facility will soon receive an upgrade. This upgrade will include the addition of a module for performing highresolution spectropolarimetry. The polarimetry module will incorporate a novel infrared beamsplitter based on polarization gratings (PGs). The beamsplitter produces a pair of infrared output beams, with opposite circular polarizations, which are then fed into the spectrograph. Visible light passes through the module virtually unaltered and is then available for use by the CRIRES adaptive optics system. We present the design of the polarimetry module and measurements of PG behavior in the 1 to 2.7 μm wavelength range.
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Matthew Lockhart, Matthew Lockhart, Nikolai Piskunov, Nikolai Piskunov, Eric Stempels, Eric Stempels, Michael Escuti, Michael Escuti, Ernesto Oliva, Ernesto Oliva, Hans-Ulrich Käufl, Hans-Ulrich Käufl, Ulrike Heiter, Ulrike Heiter, Thomas Marquart, Thomas Marquart, Guillem Anglada-Escude, Guillem Anglada-Escude, Dietrich Baade, Dietrich Baade, Paul Bristow, Paul Bristow, Reinhold J. Dorn, Reinhold J. Dorn, Roman Follert, Roman Follert, Domingo Gojak, Domingo Gojak, Jason H. Grunhut, Jason H. Grunhut, Artie Hatzes, Artie Hatzes, Michael Hilker, Michael Hilker, Derek Ives, Derek Ives, Yves Jung, Yves Jung, Florian Kerber, Florian Kerber, Barbara Klein, Barbara Klein, Jean-Louis Lizon, Jean-Louis Lizon, Tom Löwinger, Tom Löwinger, Livia Origlia, Livia Origlia, Luca Pasquini, Luca Pasquini, Jerome Paufique, Jerome Paufique, Eszter Pozna, Eszter Pozna, Ansgar Reiners, Ansgar Reiners, Ulf Seemann, Ulf Seemann, Alain Smette, Alain Smette, Jonathan Smoker, Jonathan Smoker, Elena Valenti, Elena Valenti, } "Novel infrared polarimeter for the ESO CRIRES+ instrument", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91478P (28 July 2014); doi: 10.1117/12.2056367; https://doi.org/10.1117/12.2056367
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