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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 4 — Feb. 14, 2011
  • pp: 3193–3201

High-power terahertz electromagnetic wave emission from high-T c superconducting Bi2Sr2CaCu2O8+δ mesa structures

Kazuhiro Yamaki, Manabu Tsujimoto, Takashi Yamamoto, Akio Furukawa, Takanari Kashiwagi, Hidetoshi Minami, and Kazuo Kadowaki  »View Author Affiliations


Optics Express, Vol. 19, Issue 4, pp. 3193-3201 (2011)
http://dx.doi.org/10.1364/OE.19.003193


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Abstract

In this paper, we report intense electromagnetic wave emissions generated by the rectangular mesa structure of intrinsic Josephson junctions with high-Tc superconducting Bi2Sr2CaCu2O8+δ. The radiated power is an order of magnitude stronger than that of the previously observed power of a few μW. Two emission regions, reversible (R-type) and irreversible (IR-type), with comparable intensities can be observed at different I-V curve locations in the same mesa. We find peculiar temperature dependences of the emission power in both the R- and IR-type radiations, suggesting that a non-equilibrium thermodynamic state may be realized through the dc input current. The R-type emission is quite stable, whereas the IR-type emission is rather unstable. Although the emitted frequency for both cases obey the cavity resonance conditions, this sharp contrast in emission stability is indicative of two different states in a multi-stacked intrinsic Josephson junction system.

© 2011 OSA

OCIS Codes
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 9, 2010
Revised Manuscript: January 30, 2011
Manuscript Accepted: January 31, 2011
Published: February 3, 2011

Citation
Kazuhiro Yamaki, Manabu Tsujimoto, Takashi Yamamoto, Akio Furukawa, Takanari Kashiwagi, Hidetoshi Minami, and Kazuo Kadowaki, "High-power terahertz electromagnetic wave emission from high-Tc superconducting Bi2Sr2CaCu2O8+δ mesa structures," Opt. Express 19, 3193-3201 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-4-3193


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