Terahertz Oscillating Devices Based Upon the Intrinsic Josephson Junctions in a High Temperature Superconductor

被引：24

作者：

Delfanazari, Kaveh ^{[1
]}

Asai, Hidehiro ^{[2
]}

Tsujimoto, Manabu ^{[1
]}

Kashiwagi, Takanari ^{[1
]}

Kitamura, Takeo ^{[1
]}

Ishida, Kazuya ^{[1
]}

Watanabe, Chiharu ^{[1
]}

Sekimoto, Shunsuke ^{[1
]}

Yamamoto, Takashi ^{[3
]}

Minami, Hidetoshi ^{[1
]}

Tachiki, Masashi ^{[1
]}

Klemm, Richard A. ^{[4
]}

Hattori, Toshiaki ^{[1
]}

Kadowaki, Kazuo ^{[1
]}

机构：

[1] Univ Tsukuba, Grad Sch Pure & Aplied Sci, CREST JST, WPI MANA, Tsukuba, Ibaraki 3058573, Japan

[2] Natl Inst Adv Ind Sci & Technol, Elect & Photon Res Inst, Tsukuba, Ibaraki 3058568, Japan

[3] Japan Atom Energy Agcy, Semicond Anal & Radiat Effects Grp, Gunma 3701292, Japan

[4] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA

来源：

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2014年 / 35卷 / 01期

基金：

日本科学技术振兴机构;

关键词：

Superconductor; Intrinsic Josephson junctions; Ac-Josephson effect; Terahertz wave; Cavity resonance; ANGULAR-DEPENDENCE; SINGLE-CRYSTAL; THZ RADIATION; WAVE EMISSION; BI2SR2CACU2O8+DELTA; COHERENT; POWER; FLOW;

D O I：

10.1007/s10762-013-0027-y

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Recent developments of coherent terahertz (THz) oscillators based on the intrinsic Josephson junctions (IJJs) in mesas of the high temperature superconductor Bi2Sr2CaCu2O8+delta are reviewed. Experimental and theoretical studies of the emission from equilateral, right-angled isosceles, and acute isosceles triangular mesas are compared with those obtained from rectangular, square, and disk mesas, in order to determine the role of the mesa geometry. The superconducting properties and emission frequency f spectra are presented for a variety of triangular mesa geometries. Analytic and finite difference time domain numerical calculations of the emissions from the internal electromagnetic (EM) cavity modes of triangular mesas are compared with experiment. The experimental f always satisfies the ac Josephson relation, and its narrow linewidth arises from the synchronized emissions from many IJJs. For some mesa geometries, f also strongly locks onto an EM cavity mode frequency, enhancing the emission's stability and output power. For other geometries, such cavity mode locking is weak, and f is highly tunable.

引用

页码：131 / 146

页数：16

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