19 July 2016 Design and performance of a high resolution μ-spec: an integrated sub-millimeter spectrometer
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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, Emily M. Barrentine, Giuseppe Cataldo, Giuseppe Cataldo, Ari D. Brown, Ari D. Brown, Negar Ehsan, Negar Ehsan, Omid Noroozian, Omid Noroozian, Thomas R. Stevenson, Thomas R. Stevenson, Kongpop U-Yen, Kongpop U-Yen, Edward J. Wollack, Edward J. Wollack, S. Harvey Moseley, 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); doi: 10.1117/12.2234462; https://doi.org/10.1117/12.2234462

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