Title :
Emission of Terahertz Waves From Stacks of Intrinsic Josephson Junctions
Author :
Gray, K.E. ; Ozyuzer, L. ; Koshelev, A.E. ; Kurter, C. ; Kadowaki, Kazunori ; Yamamoto, Takayuki ; Minami, Hisataka ; Yamaguchi, Hitoshi ; Tachiki, M. ; Kwok, W.-K. ; Welp, U.
Author_Institution :
Mater. Sci. Div., Argonne Nat. Lab., Argonne, IL, USA
fDate :
6/1/2009 12:00:00 AM
Abstract :
By patterning mesoscopic crystals of Bi2Sr2CaCu2O8 (BSCCO) into electromagnetic resonators the oscillations of a large number of intrinsic Josephson junctions can be synchronized into a macroscopic coherent state accompanied by the emission of strong continuous wave THz-radiation. The temperature dependence of the emission is governed by the interplay of self-heating in the resonator and by re-trapping of intrinsic Josephson junctions which can yield a strongly non-monotonic temperature dependence of the emission power. Furthermore, proper shaping of the resonators yields THz-sources with voltage-tunable emission frequencies.
Keywords :
Josephson effect; bismuth compounds; calcium compounds; high-temperature superconductors; mesoscopic systems; strontium compounds; terahertz waves; BSCCO; Bi2Sr2CaCu2O8; electromagnetic resonators; intrinsic Josephson junctions; macroscopic coherent state; mesoscopic crystals; nonmonotonic temperature dependency; self-heating; terahertz wave emission; voltage-tunable emission frequencies; Intrinsic Josephson junctions; THz-radiation;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2017888
