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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Abstract
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 |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| 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: | 0021-4922 |
| ISSN (Online): | 1347-4065 |
| Published Online: | 27 December 2011 |
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