NASA NTRS · 20210003285
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LeDuc, H. G., McGrath, W. R., Karasik, B. S.. 1999-03-16. A Hot-Electron Far-Infrared Direct Detector. https://ntrs.nasa.gov/citations/20210003285
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Recently proposed submillimeter hot-electron direct detecors based on normal metals and superconductors rely on the thermal coupling between electrons and phonons. The sensitivity of the detectors can be greatly enhanced if the coupling is made very weak at subkelvin temperatures.
A hot-electron transition-edge superconducting bolomere with adjustable thermal relaxation speed is proposed.
We have measured the device length and temperature dependence of the intermediate frequency (IF) bandwidth and noise of hot-electron bolometert (HEB) mixers made from a high-T***subc*** superconductor.