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First light results from a novel cryogenic Fabry-Pérot interferometer

Naylor, David, Veenendaal, Ian, Fulton, Trevor, Gom, Brad, Christiansen, Adam, Jellema, Willem, Feenstra, Carolien, Eggens, Martin and Ade, Peter ORCID: 2019. First light results from a novel cryogenic Fabry-Pérot interferometer. Presented at: 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Paris, France, 1-6 Sept 2019. International Conference on Infrared and Millimeter Waves. IEEE, 10.1109/IRMMW-THz.2019.8874094

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The sensitivity of state-of-the-art superconducting far-infrared detectors is such that astronomical observations at these wavelengths are limited by photon noise from the astronomical source unless a method of restricting the spectral bandpass is employed. One such method is to use a high resolution Fabry-Perot interferometer (FPI) in conjunction with a lower resolution, post-dispersing system, such as a grating spectrometer. The resonant wavelength of an FPI is typically tuned by changing the spacing or medium between the parallel reflecting plates of the etalon. We previously reported on a novel design in which the wavelength is tuned by scanning the angle of incidence, which simplifies the cryo-mechanical design, actuation and metrology. Here we present first light results from the realized instrument.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: Published
Schools: Physics and Astronomy
Publisher: IEEE
ISBN: 9781538682869
ISSN: 2162-2027
Date of First Compliant Deposit: 26 November 2019
Date of Acceptance: 21 October 2019
Last Modified: 26 Oct 2022 08:19

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