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

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

886

Lastpage

890

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2017888

Filename

4982572