Journal
PHYSICAL REVIEW APPLIED
Volume 3, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.3.024006
Keywords
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Funding
- National Basic Research Program of China (973 Program) [2014CB339800, 2011CBA00100]
- National Natural Science Foundation of China [11234006, 51102188, 6127008, 2011CBA00107, 11227904]
- Fundamental Research Funds for the Central Universities
- Jiangsu Key Laboratory of Advanced Techniques for Manipulating Electromagnetic Waves
- China Academy of Engineering Physics (CAEP) THz Science and Technology Foundation [CAEPTHZ201202]
- Russian Foundation for Basic Research (RFBR) [13-02-00493-a, 14-02-91335]
- Ministry of Education and Science of the Russian Federation [14.607.21.0100]
- Japan Science and Technology/Deutsche Forschungsgemeinschaft (JST/DFG) strategic Japanese-German International Cooperative Program
- Deutsche Forschungsgemeinschaft [KL930/12-1]
- Grants-in-Aid for scientific research from Japan Society for the Promotion of Science (JSPS) [25289108]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Grants-in-Aid for Scientific Research [25289108] Funding Source: KAKEN
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We report on a liquid-nitrogen-cooled compact source for continuous terahertz (THz) emission. The emitter is a Bi2Sr2CaCu2O8+delta intrinsic Josephson-junction stack embedded between two gold layers and sandwiched between two MgO substrates. The radiation is emitted to free space through a hollow metallic tube acting as a waveguide. The maximum emission power is 1.17 mu W. The tunable emission frequency bandwidth is up to 100 GHz with a maximum emission power at 0.311 THz. Since the operation voltage is about 1 V and the current is less than 30 mA, we are able to drive this terahertz source at 77 K with only one commercial 1.5-V battery, just like a torch. This convenient and economical setup may find applications in fields like tracer-gas detection or nondestructive evaluation.
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