CUED Publications database

High temperature superconductor terahertz emitters: Fundamental physics and its applications

Kashiwagi, T and Tsujimoto, M and Yamamoto, T and Minami, H and Yamaki, K and Delfanazari, K and Deguchi, K and Orita, N and Koike, T and Nakayama, R and Kitamura, T and Sawamura, M and Hagino, S and Ishida, K and Ivanovic, K and Asai, H and Tachiki, M and Klemm, RA and Kadowaki, K (2012) High temperature superconductor terahertz emitters: Fundamental physics and its applications. Japanese Journal of Applied Physics, 51. ISSN 0021-4922

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Abstract

Coherent and continuous radiation sources of the electromagnetic (EM) waves at terahertz (1 THz = 10 12 c/s) frequencies using a mesa structure fabricated from high temperature superconducting Bi 2Sr 2CaCu 2O 8+δ single crystals are described with a special emphasis on the physics of the radiation mechanism and the applications. After the intensive studies of many mesas fabricated with different conditions, it is revealed that the ac-Josephson effect works as a primary driving mechanism of the radiation and the cavity resonance needed for stronger radiation plays an additional role to the mechanism, although both are working together while radiating. A prototype of the imaging machine for multipurpose uses has successfully been developed. © 2012 The Japan Society of Applied Physics.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:00
Last Modified: 24 Nov 2020 08:51
DOI: 10.1143/JJAP.51.010113