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Ti Hot Electron Bolometers with Johnson Noise Readout for Terahertz Radiation Detection
Gao, H.1,2,3; Miao, W.1,3; Wang, Z.1,3; Zhang, W.1,3; Ren, Y.1,3; Zhou, K. M.1,3; Zhong, J. Q.1,3; Shi, S. C.1,3
2020-02-28
Source PublicationJOURNAL OF LOW TEMPERATURE PHYSICS
ISSN0022-2291
Issue0Pages:7
Abstract

A hot electron bolometer (HEB) with Johnson noise readout is an attractive technique for radiation detection due to its high sensitivity, wide operating temperature range, and large dynamic range. In this paper, we present the development of a terahertz HEB based on Johnson noise readout. The HEB consists of a titanium microbridge connected to two high-energy-gap niobium contacts for confining hot electrons. We measured the thermal conductance and noise equivalent power (NEP) of the HEB at different bath temperatures. We find that the thermal conductance due to the electron-phonon interaction increases with temperature as T-2.5. At 3.0 K, the thermal conductance is found to be 37.9 +/- 1.4 nW/K and the electrical NEP is as low as 23.0 +/- 0.8 pW/Hz. In addition, we find that the HEB works efficiently up to 15 mu W input power.

KeywordHot electron bolometer Johnson noise readout Thermal conductance Equivalent noise power Dynamic range
DOI10.1007/s10909-020-02346-0
WOS KeywordNANOBOLOMETERS ; SCATTERING
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied ; Physics, Condensed Matter
WOS IDWOS:000518153100005
PublisherSPRINGER/PLENUM PUBLISHERS
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/36173
Collection中国科学院紫金山天文台
Corresponding AuthorMiao, W.
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Gao, H.,Miao, W.,Wang, Z.,et al. Ti Hot Electron Bolometers with Johnson Noise Readout for Terahertz Radiation Detection[J]. JOURNAL OF LOW TEMPERATURE PHYSICS,2020(0):7.
APA Gao, H..,Miao, W..,Wang, Z..,Zhang, W..,Ren, Y..,...&Shi, S. C..(2020).Ti Hot Electron Bolometers with Johnson Noise Readout for Terahertz Radiation Detection.JOURNAL OF LOW TEMPERATURE PHYSICS(0),7.
MLA Gao, H.,et al."Ti Hot Electron Bolometers with Johnson Noise Readout for Terahertz Radiation Detection".JOURNAL OF LOW TEMPERATURE PHYSICS .0(2020):7.
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