High Temperature Superconductor Terahertz Emitters: Fundamental Physics and Its Applications
Abbreviated Journal Title
Jpn. J. Appl. Phys.
INTRINSIC JOSEPHSON-JUNCTIONS; RESONANT-TUNNELING DIODES; FLUX-FLOW; OSCILLATORS; MESA STRUCTURES; THZ RADIATION; T-C; SINGLE-CRYSTALS; VORTEX FLOW; EMISSION; BI2SR2CACU2O8+DELTA; Physics, Applied
Coherent and continuous radiation sources of the electromagnetic (EM) waves at terahertz (1 THz = 10(12) c/s) frequencies using a mesa structure fabricated from high temperature superconducting Bi2Sr2CaCu2O8-delta single crystals are described with a special emphasis on the physics of the radiation mechanism and the applications. After the intensive studies of many mesas fabricated with different conditions, it is revealed that the ac-Josephson effect works as a primary driving mechanism of the radiation and the cavity resonance needed for stronger radiation plays an additional role to the mechanism, although both are working together while radiating. A prototype of the imaging machine for multipurpose uses has successfully been developed. (C) 2012 The Japan Society of Applied Physics
Japanese Journal of Applied Physics
"High Temperature Superconductor Terahertz Emitters: Fundamental Physics and Its Applications" (2012). Faculty Bibliography 2010s. 2836.