Utilizing Nonlinearity in a Superconducting NbN Stripline Resonator for Radiation Detection

Author

Segev, Eran ; Abdo, Baleegh ; Shtempluck, Oleg ; Buks, Eyal

Author_Institution

Dept. of Electr. Eng. & Microelectron. Res. Center, Haifa

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

271

Lastpage

274

Abstract

We study a microwave superconducting stripline resonator made of NbN on a sapphire substrate. A radiation detector (RD) having a thin meander shape is integrated into the resonator. We harness an extremely strong nonlinear instability occurring in the device in order to enhance its sensitivity to infrared radiation impinging on the RD. Characterization measurements yield a noise equivalent power of 34 fW/radicHz at a modulation frequency of 7.74 GHz. Such a device may be exploited for fast and sensitive radiation detection.

Keywords

characteristics measurement; infrared detectors; niobium compounds; sapphire; superconducting cavity resonators; superconducting photodetectors; NbN - Interface; characterization measurement; frequency 7.74 GHz; infrared radiation; microwave superconducting stripline resonator; noise equivalent power; nonlinear instability; radiation detection; radiation detector; sapphire substrate; superconducting NbN stripline resonator; Frequency measurement; Noise measurement; Noise shaping; Power measurement; Radiation detectors; Shape; Stripline; Superconducting device noise; Superconducting microwave devices; Superconducting photodetectors;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.897723

Filename

4277702