Journal
OPTICS EXPRESS
Volume 21, Issue 2, Pages 2171-2184Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.002171
Keywords
-
Categories
Funding
- CREST-JST (Japan Science and Technology Agency)
- WPI (World Premier International Research Center Initiative)-MANA (Materials Nanoarchitectonics)
- Grants-in-Aid for Scientific Research [12J10788, 24654097] Funding Source: KAKEN
Ask authors/readers for more resources
In order to determine if the mesa geometry might affect the properties of the coherent terahertz (THz) radiation emitted from the intrinsic Josephson junctions in mesas constructed from single crystals of the high-temperature superconductor, Bi2Sr2CaCu2O8+delta, we studied triangular mesas. For equilateral triangular mesas, the observed emission was found to be limited to the single mesa TM(1,0) mode. However, tunable radiation over the range from 0.495 to 0.934 THz was found to arise from an acute isosceles triangular mesa. This 47% tunability is the widest yet observed from the outer current-voltage characteristic branch of such mesas of any geometry. Although the radiation at a few of the frequencies in the tunable range appear to have been enhanced by cavity resonances, most frequencies are far from such resonance frequencies, and can only be attributed to the ac-Josephson effect. (C) 2013 Optical Society of America
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