A niobium nitride superconducting hot electron bolometer direct terahertz detector working at 9 K
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/Hz1/2. 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.
Authors
- Jian Chen (ORCID: https://orcid.org/0000-0002-1360-8969)
- Xiaoqing Jia (ORCID: https://orcid.org/0000-0002-4876-0370)
- Xuecou Tu (ORCID: https://orcid.org/0000-0001-8357-6221)
- Hongkai Shi
- Runfeng Su (ORCID: https://orcid.org/0000-0003-4609-2425)
- Peiheng Wu (ORCID: https://orcid.org/0000-0003-2663-8953)
- Tao Xu (ORCID: https://orcid.org/0009-0004-1513-0390)
- Kebin Fan (ORCID: https://orcid.org/0000-0002-0275-0871)
- Lin Kang (ORCID: https://orcid.org/0000-0002-3812-264X)
- Han Bao (ORCID: https://orcid.org/0009-0004-6821-0976)
- Yijun Zhe
- Jianfeng Li
Institutions
- University of Science and Technology of China (CN)
- Hefei University (CN)
- CAS Key Laboratory of Urban Pollutant Conversion (CN)
- Purple Mountain Laboratories (CN)
- Nanjing University (CN)
Publication Details
- Journal
- Applied Physics Letters
- Published
- 2025-01-27
- DOI
- https://doi.org/10.1063/5.0231315
- Primary Topic
- Superconducting and THz Device Technology
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Fundamental Research Funds for the Central Universities