Journal
NATURE PHOTONICS
Volume 7, Issue 9, Pages 702-710Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHOTON.2013.216
Keywords
-
Categories
Funding
- U.S. Department of Energy (BES)
- Japanese Society for the Promotion of Science (JSPS)
- Japan Science and Technology Agency (JST)
- Deutsche Forschungsgemeinschaft (DFG)
Ask authors/readers for more resources
Layered superconductors such as the copper-oxide high-temperature superconductor Bi2Sr2CaCu2O8+delta are emerging as compact sources of coherent continuous-wave electromagnetic radiation in the subterahertz and terahertz frequency ranges. The basis of their operation is the Josephson effect, which intrinsically occurs between the superconducting layers. The Josephson effect naturally converts a direct-current voltage into a high-frequency electric current. Therefore, a unique property of the devices reviewed here is the wide tunability of their frequency by varying the bias voltage. Recently, emission powers of free-space radiation of several hundreds of microwatts and emission linewidths as low as 6 MHz at 600 GHz have been achieved. These devices are promising for new applications in imaging, medical diagnostics, spectroscopy and security.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available