1. Progress in Development of the Superconducting Bolometer With Microwave Bias and Readout.
- Author
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Shitov, Sergey V., Kuzmin, Artem A., Merker, Michael, Chichkov, Vladimir I., Merenkov, Alexey V., Ermakov, Andrey B., Ustinov, Alexey V., and Siegel, Michael
- Subjects
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SUPERCONDUCTING device testing , *BOLOMETERS , *QUALITY factor , *ELECTRIC resonators , *NIOBIUM - Abstract
Our new detector and readout concept brings together TES (Transition Edge Sensor) and MKID (Microwave Kinetic Inductance Detector) technologies and exploits the idea of a microwave-induced superconducting transition in a small thin-film microbridge. The superconducting transition of the bridge manifests itself as variation in the Q -factor of niobium resonators at 5–8 GHz, somewhat similar to MKID operation. We present data showing the potential for developing this concept into multipixel detector arrays. Single-pixel sensitivity was measured at 4.5 K for an input band of 600–700 GHz using a prototype 10-nm-thick Nb bridge of size 1 μm × 500 nm. Radiation from human skin was detected with a resolution better than 1 K/rtHz, which is encouraging for terahertz imaging applications. To further improve device sensitivity, we are also developing Hf-based devices that operate near 0.35 K. Details about the physics and stability of these devices are discussed. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
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