Cavity mode identification for coherent terahertz emission from high-Tc superconductors

Stacks of intrinsic Josephson junctions in Bi Sr CaCu O emit intense and coherent terahertz waves determined by the internal electromagnetic cavity resonance. We identify the excited transverse magnetic mode by observing the broadly tunable emissions from a nearly square stack and simulating the sca...

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Published inOptics express Vol. 24; no. 5; pp. 4591 - 4599
Main Authors Tsujimoto, Manabu, Kakeya, Itsuhiro, Kashiwagi, Takanari, Minami, Hidetoshi, Kadowaki, Kazuo
Format Journal Article
LanguageEnglish
Published United States 07.03.2016
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Summary:Stacks of intrinsic Josephson junctions in Bi Sr CaCu O emit intense and coherent terahertz waves determined by the internal electromagnetic cavity resonance. We identify the excited transverse magnetic mode by observing the broadly tunable emissions from a nearly square stack and simulating the scattering spectrum. We employ a wedge-type interferometer to measure spatially-integrated power independently of the far-field pattern. The simulation results are in good agreement with observed resonance behaviors as a function of frequency.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.24.004591