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19 July 2016 Design and performance of a high resolution μ-spec: an integrated sub-millimeter spectrometer
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Abstract
μ-Spec is a compact submillimeter (~ 100 GHz - 1:1 THz) spectrometer which uses low loss superconducting microstrip transmission lines and a single-crystal silicon dielectric to integrate all of the components of a diffraction grating spectrometer onto a single chip. We have already successfully evaluated the performance of a prototype μ-Spec, with spectral resolving power, R=64. Here we present our progress towards developing a higher resolution μ-Spec, which would enable the first science returns in a balloon flight version of this instrument. We describe modifications to the design in scaling from a R=64 to a R=256 instrument, as well as the ultimate performance limits and design concerns when scaling this instrument to higher resolutions.
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Emily M. Barrentine, Giuseppe Cataldo, Ari D. Brown, Negar Ehsan, Omid Noroozian, Thomas R. Stevenson, Kongpop U-Yen, Edward J. Wollack, and S. Harvey Moseley "Design and performance of a high resolution μ-spec: an integrated sub-millimeter spectrometer", Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99143O (19 July 2016); https://doi.org/10.1117/12.2234462
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