A niobium nitride superconducting hot electron bolometer direct terahertz detector working at 9 K

被引：0

作者：

Shi, Hongkai ^{[1
]}

Xu, Tao ^{[1
]}

Zhe, Yijun ^{[1
]}

Su, Runfeng ^{[1
]}

Li, Jianfeng ^{[1
]}

Bao, Han ^{[1
]}

Tu, Xuecou ^{[1
,2
,3
]}

Fan, Kebin ^{[1
,4
]}

Jia, Xiaoqing ^{[1
,2
,3
]}

Kang, Lin ^{[1
,2
,3
]}

Chen, Jian ^{[1
,4
]}

Wu, Peiheng ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ, Res Inst Supercond Elect RISE, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China

[2] Hefei Natl Lab, Hefei 230088, Peoples R China

[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum Ph, Hefei 230026, Peoples R China

[4] Purple Mt Labs, Nanjing 211111, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2025年 / 126卷 / 04期

关键词：

SENSITIVITY;

D O I：

10.1063/5.0231315

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Increasing the bath temperature of the hot electron bolometer (HEB) while ensuring sensitivity could expand the application field and reduce the system complexity and cost. This study proposed and prepared a suspended NbN/Nb5N6 HEB with doubled bath temperature and undegraded sensitivity compared to NbN HEB. Under the bath temperature of 9 K, the optical noise equivalent power of the system was still of the order of pW/Hz(1/2). Moreover, the influence of thermal relaxation on the device sensitivity was simulated. The results would provide a pathway for improving the bath temperature and detector sensitivity through fine adjustments of the thermal boundaries.

引用

页数：6

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