Emission of Coherent THz Radiation from Superconductors
Izmir Institute of Technology · Argonne National Laboratory · +5 more institutions
Abstract
Compact solid-state sources of terahertz (THz) radiation are being sought for sensing, imaging, and spectroscopy applications across the physical and biological sciences. We demonstrate that coherent continuous-wave THz radiation of sizable power can be extracted from intrinsic Josephson junctions in the layered high-temperature superconductor Bi2Sr2CaCu2O8. In analogy to a laser cavity, the excitation of an electromagnetic cavity resonance inside the sample generates a macroscopic coherent state in which a large number of junctions are synchronized to oscillate in phase. The emission power is found to increase as the square of the number of junctions reaching values of 0.5 microwatt at frequencies up to 0.85…
Citation impact
- FWCI
- 52.43
- Percentile
- 100%
- References
- 27
Authors
14- LÖL. Özyüzer
Izmir Institute of Technology, Argonne National Laboratory, Illinois Institute of Technology, The University of Tokyo
- AEA. E. Koshelev
Izmir Institute of Technology, Argonne National Laboratory, Illinois Institute of Technology, The University of Tokyo
- CKCihan Kurter
Izmir Institute of Technology, Argonne National Laboratory, Illinois Institute of Technology, The University of Tokyo
- NGN. Gopalsami
Izmir Institute of Technology, Argonne National Laboratory, Illinois Institute of Technology, The University of Tokyo
- QLQ. Li
Izmir Institute of Technology, Argonne National Laboratory, Illinois Institute of Technology, The University of Tokyo
Topics & keywords
- Terahertz radiation
- Superconductivity
- Josephson effect
- Radiation
- Physics
- Electromagnetic radiation
- Laser
- Optoelectronics
- Affordable and clean energy