Title

Continuous 30 mu W terahertz source by a high-T-c superconductor mesa structure

Authors

Authors

S. Sekimoto; C. Watanabe; H. Minami; T. Yamamoto; T. Kashiwagi; R. A. Klemm;K. Kadowaki

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

JOSEPHSON-JUNCTION ARRAYS; SINGLE-CRYSTALS; THZ RADIATION; BI2SR2CACU2O8+DELTA; EMISSION; GENERATION; MILLIMETER; EMITTERS; Physics, Applied

Abstract

Using a modified mesa structure of high-T-c superconducting Bi2Sr2CaCu2O8+delta with a thin underlaying base superconductor (similar to 3 mu m), the effective working temperature of the continuous and monochromatic terahertz emitter is extended up to 70 K, and the maximum power of similar to 30 mu W at 0.44 THz is achieved at the relatively high temperature of T-b = 55 K in a low bias current retrapping region. The diverging behavior of the intensity occurring at 55 K in the low current regime without hot spot formation may provide us an important clue for the stronger THz radiation from intrinsic Josephson junction devices. (C) 2013 AIP Publishing LLC.

Journal Title

Applied Physics Letters

Volume

103

Issue/Number

18

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

5

WOS Identifier

WOS:000327816000030

ISSN

0003-6951

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