Abstract

We characterize superconducting antenna-coupled NbN hot-electron bolometer (HEB) for direct detection of THz radiation operating at a temperature of 9.0 K. At signal frequency of 2.5 THz, the measured value of the optical noise equivalent power is 2.0×10-13 W-Hz-0.5. The estimated value of the energy resolution is about 1.5 aJ. This value was confirmed in the experiment with pulsed 1.55-μm laser employed as a radiation source. The directly measured detector energy resolution is 2 aJ. The obtained risetime of pulses from the detector is 130 ps. This value was determined by the properties of the RF line. These characteristics make our detector a device-of-choice for a number of practical applications associated with detection of short THz pulses.

Details

Title
Attojoule energy resolution of direct detector based on hot electron bolometer
Author
Seliverstov, S V 1 ; Rusova, A A 1 ; Kaurova, N S 1 ; Voronov, B M 1 ; Goltsman, G N 2 

 Physics Department, Moscow State Pedagogical University, 29 Malaya Pirogovskaya St., Moscow, 119992, Russia 
 Physics Department, Moscow State Pedagogical University, 29 Malaya Pirogovskaya St., Moscow, 119992, Russia; Moscow Institute of Electronics and Mathematics, National Research University Higher School of Economics, 34 Tallinskaja St., Moscow, 123458, Russia 
Publication year
2016
Publication date
Aug 2016
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2575184982
Copyright
© 2016. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.