Design considerations for a background limited 350 micron pixel array using lumped element superconducting microresonators

Christopher M. McKenney; Henry G. Leduc; Loren J. Swenson; Peter K. Day; Byeong H. Eom; Jonas Zmuidzinas

doi:10.1117/12.925759

24 September 2012 Design considerations for a background limited 350 micron pixel array using lumped element superconducting microresonators

Christopher M. McKenney, Henry G. Leduc, Loren J. Swenson, Peter K. Day, Byeong H. Eom, Jonas Zmuidzinas

Author Affiliations +

Proceedings Volume 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI; 84520S (2012) https://doi.org/10.1117/12.925759
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Future submillimeter telescopes will demand arrays with 10₆ pixels to fill the focal plane. MAKO is a 350 μm camera being developed to demonstrate the use of superconducting microresonators to meet the high multiplexing factors required for scaling to large-format arrays while offering background-limited single-pixel sensitivity. Candidate pixel designs must simultaneously meet many requirements. To achieve the desired noise equivalent powers it must efficiently absorb radiation, feature a high responsivity, and exhibit low intrinsic device noise. Additionally, the use of high resonator quality factors of order ~ 10₅ and resonant frequencies of order f_res ≈ 100 MHz are desirable in order to reduce the per-pixel bandwidth to a minimum set by telescope scan speeds. This allows a maximum number of pixels to be multiplexed in a fixed electronic bandwidth. Here we present measurement results of the first MAKO prototype array which meets these design requirements while demonstrating sufficient sensitivity for background-limited operation at ground-based, far-infrared telescopes.

Citation Download Citation

Christopher M. McKenney, Henry G. Leduc, Loren J. Swenson, Peter K. Day, Byeong H. Eom, and Jonas Zmuidzinas "Design considerations for a background limited 350 micron pixel array using lumped element superconducting microresonators", Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84520S (24 September 2012); https://doi.org/10.1117/12.925759

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