Polarization Sensitive Multi-Chroic MKIDs

Abstract

We report on the development of scalable prototype microwave kinetic inductance detector (MKID) arrays tailored for future multi-kilo-pixel experiments that are designed to simultaneously characterize the polarization properties of both the cosmic microwave background (CMB) and Galactic dust emission. These modular arrays are composed of horn-coupled, polarization-sensitive MKIDs, and each pixel has four detectors: two polarizations in two spectral bands between 125 and 280 GHz. A horn is used to feed each array element, and a planar orthomode transducer, composed of two waveguide probe pairs, separates the incoming light into two linear polarizations. Diplexers composed of resonant-stub band-pass filters separate the radiation into 125 to 170 GHz and 190 to 280 GHz pass bands. The millimeter-wave power is ultimately coupled to a hybrid co-planar waveguide microwave kinetic inductance detector using a novel, broadband circuit developed by our collaboration. Electromagnetic simulations show the expected absorption efficiency of the detector is approximately 90%. Array fabrication will begin in the summer of 2016.

To appear in the Proc. SPIE

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• The Atacama Cosmology Telescope: The polarization-sensitive ACTPol instrument
• BICEP2 II: Experiment and Three-Year Data Set
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• The bolometric focal plane array of the Polarbear CMB experiment
• The Next Generation BLAST Experiment
• Horn-Coupled, Commercially-Fabricated Aluminum Lumped-Element Kinetic Inductance Detectors for Millimeter Wavelengths
• SuperSpec: design concept and circuit simulations
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Cited by in corpus (4)

• Design and performance of dual-polarization lumped-element kinetic inductance detectors for millimeter-wave polarimetry
• High quality factor manganese-doped aluminum lumped-element kinetic inductance detectors sensitive to frequencies below 100 GHz
• Development of Multi-Chroic MKIDs for Next-Generation CMB Polarization Studies
• Fabrication of antenna-coupled KID array for Cosmic Microwave Background detection