High temperature superconductor terahertz emitters: fundamental physics and its applications

Kashiwagi, T. et al. (2011) High temperature superconductor terahertz emitters: fundamental physics and its applications. Japanese Journal of Applied Physics, 51(1), 010113. (doi: 10.1143/JJAP.51.010113)

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Coherent and continuous radiation sources of the electromagnetic (EM) waves at terahertz (1 THz = 1012 c/s) frequencies using a mesa structure fabricated from high temperature superconducting Bi2Sr2CaCu2O8+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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Delfanazari, Dr Kaveh
Authors: Kashiwagi, T., Tsujimoto, M., Yamamoto, T., Minami, H., Yamaki, K., Delfanazari, K., Deguchi, K., Orita, N., Koike, T., Nakayama, R., Kitamura, T., Sawamura, M., Hagino, S., Ishida, K., Ivanovic, K., Asai, H., Tachiki, M., Klemm, R. A., and Kadowaki, K.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Japanese Journal of Applied Physics
Publisher:IOP Publishing
ISSN (Online):1347-4065
Published Online:27 December 2011

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