Publications by Maximilian Abitbol

Development of dual-polarization LEKIDs for CMB observations

Proceedings of SPIE - The International Society for Optical Engineering 9914 (2016)

H McCarrick, MH Abitbol, PAR Ade, P Barry, S Bryan, G Che, P Day, S Doyle, D Flanigan, BR Johnson, G Jones, HG LeDuc, M Limon, P Mauskopf, A Miller, C Tucker, J Zmuidzinas

© 2016 SPIE. We discuss the design considerations and initial measurements from arrays of dual-polarization, lumped-element kinetic inductance detectors (LEKIDs) nominally designed for cosmic microwave background (CMB) studies. The detectors are horn-coupled, and each array element contains two single-polarization LEKIDs, which are made from thin-film aluminum and optimized for a single spectral band centered on 150 GHz. We are developing two array architectures, one based on 160 micron thick silicon wafers and the other based on silicon-on-insulator (SOI) wafers with a 30 micron thick device layer. The 20-element test arrays (40 LEKIDs) are characterized with both a linearly-polarized electronic millimeter wave source and a thermal source. We present initial measurements including the noise spectra, noise-equivalent temperature, and responsivity. We discuss future testing and further design optimizations to be implemented.

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