28 July 2014 Novel infrared polarimeter for the ESO CRIRES+ instrument
Author Affiliations +
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.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Matthew Lockhart, Nikolai Piskunov, Eric Stempels, Michael Escuti, Ernesto Oliva, Hans-Ulrich Käufl, Ulrike Heiter, Thomas Marquart, Guillem Anglada-Escude, Dietrich Baade, Paul Bristow, Reinhold J. Dorn, Roman Follert, Domingo Gojak, Jason H. Grunhut, Artie Hatzes, Michael Hilker, Derek Ives, Yves Jung, Florian Kerber, Barbara Klein, Jean-Louis Lizon, Tom Löwinger, Livia Origlia, Luca Pasquini, Jerome Paufique, Eszter Pozna, Ansgar Reiners, Ulf Seemann, Alain Smette, Jonathan Smoker, 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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