Tsujimoto, M. et al. (2012) Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconductingBi2Sr2CaCu2O8+δ single crystals. Physical Review Letters, 108(10), 107006. (doi: 10.1103/PhysRevLett.108.107006) (PMID:22463446)
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Abstract
Continuous, coherent subterahertz radiation arises when a dc voltage is applied across a stack of the many intrinsic Josephson junctions in a Bi 2 Sr 2 CaCu 2 O 8 + δ single crystal. The active junctions produce an equal number of I − V characteristic branches. Each branch radiates at a slightly tunable frequency obeying the Josephson relation. The overall output is broadly tunable and nearly independent of heating effects and internal cavity frequencies. Amplification by a surrounding external cavity to allow for the development of a useful high-power source is proposed.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Delfanazari, Dr Kaveh |
| Authors: | Tsujimoto, M., Yamamoto, T., Delfanazari, K., Nakayama, R., Kitamura, T., Sawamura, M., Kashiwagi, T., Minami, H., Tachiki, M., Kadowaki, K., and Klemm, R. A. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
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