Title :
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
fDate :
6/1/2007 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.897723
