Investigation of Optical Coupling in Microwave Kinetic Inductance Detectors using Superconducting Reflective Plates

Paul Nicaise; Jie Hu; Jean-Marc Martin; Samir Beldi; Christine Chaumont; Piercarlo Bonifacio; Michel Piat; Hervé Geoffray; Faouzi Boussaha

doi:10.1007/s10909-022-02789-7

Investigation of Optical Coupling in Microwave Kinetic Inductance Detectors using Superconducting Reflective Plates

Instrumentation and Detectors 2022-07-27 v1

Authors: Paul Nicaise , Jie Hu , Jean-Marc Martin , Samir Beldi , Christine Chaumont , Piercarlo Bonifacio , Michel Piat , Hervé Geoffray , Faouzi Boussaha

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

To improve the optical coupling in Microwave Kinetic Inductance Detectors (MKIDs), we investigate the use of a reflective plate beneath the meandered absorber. We designed, fabricated and characterized high-Q factors TiN-based MKIDs on sapphire operating at optical wavelengths with a Au/Nb reflective thin bilayer below the meander. The reflector is set at a quarter-wave distance from the meander using a transparent Al $_2$ O $_3$ dielectric layer to reach the peak photon absorption. We expect the plate to recover undetected photons by reflecting them back onto the absorber.

Keywords

microwave kinetic inductance detector optical coupling reflective plate tin sapphire photon absorption

Cite

@article{arxiv.2207.02497,
  title  = {Investigation of Optical Coupling in Microwave Kinetic Inductance Detectors using Superconducting Reflective Plates},
  author = {Paul Nicaise and Jie Hu and Jean-Marc Martin and Samir Beldi and Christine Chaumont and Piercarlo Bonifacio and Michel Piat and Hervé Geoffray and Faouzi Boussaha},
  journal= {arXiv preprint arXiv:2207.02497},
  year   = {2022}
}

Comments

Journal of Low Temperature Physics, Springer Verlag (Germany), In press

Investigation of Optical Coupling in Microwave Kinetic Inductance Detectors using Superconducting Reflective Plates

Abstract

Keywords

Cite

Comments

Related papers