PT Journal
AU Shurakov, A
   Tong, CE
   Grimes, P
   Blundell, R
   Golt'sman, G
TI A microwave reflection readout scheme for hot electron bolometric direct detector
SO IEEE Trans. THz Sci. Technol.
JI IEEE Trans. THz Sci. Technol.
PY 2015
BP 81
EP 84
VL 5
DE HEB detectors
AB In this paper, we propose and present data from a fast THz detector based on the repurpose of hot electron bolometer mixers (HEB) fabricated from superconducting NbN thinfilm. This detector is essentially a traditional NbN bolometer element that operates under the influence of a microwave pump. The in-jected microwave power serves the dual purpose of enhancing the detector sensitivity and reading out the impedance changes of the device in response to incidentTHz radiation. We have measured an optical Noise Equivalent Power of 4 pW/ Hz for our detector at a bath temperature of 4.2 K. The measurement frequency was 0.83 THz and the modulation frequency was 1.48 kHz. The readoutscheme is versatile and facilitates both high-speed operation as well as multi-pixel applications.
ER