Title

Generation of electromagnetic waves from 0.3 to 1.6 terahertz with a high-T-c superconducting Bi2Sr2CaCu2O8+delta intrinsic Josephson junction emitter

Authors

Authors

T. Kashiwagi; T. Yamamoto; T. Kitamura; K. Asanuma; C. Watanabe; K. Nakade; T. Yasui; Y. Saiwai; Y. Shibano; H. Kubo; K. Sakamoto; T. Katsuragawa; M. Tsujimoto; K. Delfanazari; R. Yoshizaki; H. Minami; R. A. Klemm;K. Kadowaki

Comments

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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

SINGLE-CRYSTALS; THZ RADIATION; Physics, Applied

Abstract

To obtain higher power P and frequency f emissions from the intrinsic Josephson junctions in a high-T-c superconducting Bi2Sr2CaCu2O8+delta single crystal, we embedded a rectangular stand-alone mesa of that material in a sandwich structure to allow for efficient heat exhaust. By varying the current-voltage (I-V) bias conditions and the bath temperature T-b, f is tunable from 0.3 to 1.6 THz. The maximum P of a few tens of mu W, an order of magnitude greater than from previous devices, was found at T-b similar to 55K on an inner I-V branch at the TM(1,0) cavity resonance mode frequency. The highest f of 1.6 THz was found at T-b = 10K on an inner I-V branch, but away from cavity resonance frequencies. A possible explanation is presented. (C) 2015 AIP Publishing LLC.

Journal Title

Applied Physics Letters

Volume

106

Issue/Number

9

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

5

WOS Identifier

WOS:000351069900037

ISSN

0003-6951

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