Naylor, David, Veenendaal, Ian, Fulton, Trevor, Gom, Brad, Christiansen, Adam, Jellema, Willem, Feenstra, Carolien, Eggens, Martin and Ade, Peter ![]() ![]() |
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Abstract
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) |
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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 |
URI: | https://orca.cardiff.ac.uk/id/eprint/127137 |
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