Characteristics of terahertz radiation emitted from the intrinsic Josephson junctions in high-Tc superconductor Bi2Sr2CaCu2O8+δ | Zendy

Hidetoshi Minami | Zendy; Itsuhiro Kakeya | Zendy; Hiroshi Yamaguchi | Zendy; Takashi Yamamoto | Zendy; K. Kadowaki | Zendy

Open Access

Characteristics of terahertz radiation emitted from the intrinsic Josephson junctions in high-Tc superconductor Bi2Sr2CaCu2O8+δ

Author(s) -

Hidetoshi Minami,

Itsuhiro Kakeya,

Hiroshi Yamaguchi,

Takashi Yamamoto,

K. Kadowaki

Publication year - 2009

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3269996

Subject(s) - terahertz radiation , josephson effect , superconductivity , radiation , high temperature superconductivity , bolometer , materials science , optoelectronics , condensed matter physics , physics , optics , detector

Characteristic features of terahertz radiation emitted from a rectangular mesa comprised stacked intrinsic Josephson junctions in the layered high-Tc superconductor Bi2Sr2CaCu2O8+delta are reported. The emission with the total power of ~5 µW at 0.63 THz shows a characteristic spatial distribution reflecting the rectangular shape. The stability of the emission was measured for at least 20 min. and the power fluctuation was found to be less than 4%. Furthermore, the radiation is highly polarized linearly with a ratio of 50:1. All features, including the spectral purity narrower than 4 GHz at full width at half maximum, promise a stable, coherent, and continuous terahertz source for various applications

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