%0 Conference Proceedings
%T Attojoule energy resolution of direct detector based on hot electron bolometer
%A Seliverstov, S. V.
%A Rusova, A. A.
%A Kaurova, N. S.
%A Voronov, B. M.
%A Goltsman, G. N.
%S J. Phys.: Conf. Ser.
%D 2016
%V 741
%I IOP Publishing
%F Seliverstov_etal2016
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1337), last updated on Wed, 12 May 2021 00:33:51 -0500
%X 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.
%K NbN HEB detector
%R 10.1088/1742-6596/741/1/012165
%U https://doi.org/10.1088/1742-6596/741/1/012165
%P 012165 (1 to 5)