Experimental demonstration of a resolving power of 25-55 at 1545-402 nm wavelengths with photon-counting MKIDs

Pieter J. de Visser; Vignesh Murugesan; David Thoen; Jochem Baselmans

doi:10.1117/12.2561523

13 December 2020 Experimental demonstration of a resolving power of 25-55 at 1545-402 nm wavelengths with photon-counting MKIDs

Pieter J. de Visser, Vignesh Murugesan, David Thoen, Jochem Baselmans

Author Affiliations +

Proceedings Volume 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX; 1145417 (2020) https://doi.org/10.1117/12.2561523
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

A noiseless, photon counting detector is desired for low light applications in astronomy. We study superconducting Microwave Kinetic Inductance Detectors (MKIDs) in which the intrinsic energy resolution eliminates the conventional dark current. A visible/near-IR photon creates thousands of quasiparticles through electron-phonon interaction. Phonons lost in this process limit the energy resolution to E/dE<20 (10) for aluminium MKIDs on solid substrate, measured with a 402 (1545) nm laser. When fabricated on a 120 nm SiN membrane, E/dE increases to 55 (25), which demonstrates that phonons are more effectively trapped, and that the promises on resolving power for MKIDs are realistic.

Conference Presentation

Citation Download Citation

Pieter J. de Visser, Vignesh Murugesan, David Thoen, and Jochem Baselmans "Experimental demonstration of a resolving power of 25-55 at 1545-402 nm wavelengths with photon-counting MKIDs", Proc. SPIE 11454, X-Ray, Optical, and Infrared Detectors for Astronomy IX, 1145417 (13 December 2020); https://doi.org/10.1117/12.2561523

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