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Proceedings Paper

Development of the Fabry-Perot interferometers for the HIRMES spectrometer on SOFIA
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Paper Abstract

HIRMES is a far-infrared spectrometer that was chosen as the third generation instrument for NASA's SOFIA airborne observatory. HIRMES promises background limited performance in four modes that cover the wavelength range between 25 and 122 μm. The high-spectral resolution (R ≈105) mode is matched to achieve maximum sensitivity on velocity-resolved lines to study the evolution of protoplanetary disks. The mid-resolution (R≈12,000) mode is suitable for high sensitivity imaging of galactic star formation regions in, for example, the several far-infrared fine structure lines. The low-resolution (R≈2000) imaging mode is optimized for spectroscopic mapping of far-infrared fine structure lines from nearby galaxies, while the low resolution (R≈600) grating spectrometer mode is optimized for detecting dust and ice features in protostellar and protoplanetary disks. Several Transition Edge Sensed (TES) bolometer arrays will provide background limited sensitivity in each of these modes. To optimize performance in the various instrument modes, HIRMES employs eight unique fully-tunable cryogenic Fabry-Perot Interferometers (FPIs) and a grating spectrometer. Here we present the design requirements and the mechanical and optical characteristics and performance of these tunable FPI as well as the control electronics that sets the mirror separation and allows scanning of the FPIs.

Paper Details

Date Published: 15 August 2018
PDF: 13 pages
Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107081P (15 August 2018); doi: 10.1117/12.2314213
Show Author Affiliations
Greg Douthit, Cornell Univ. (United States)
Gordon Stacey, Cornell Univ. (United States)
Thomas Nikola, Cornell Univ. (United States)
Chuck Henderson, Cornell Univ. (United States)
George Gull, Cornell Univ. (United States)
Kayla Rossi, Cornell Univ. (United States)
Alexander Kutryrev, NASA Goddard Space Flight Ctr. (United States)
Samuel Moseley, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 10708:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
Jonas Zmuidzinas; Jian-Rong Gao, Editor(s)

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