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arXiv · 0912.3063

Evidence for a Dual-Source Mechanism of THz Radiation from Rectangular Mesas of Single Crystalline \bm{$\mathrm{Bi_2Sr_2CaCu_2O_{8+\delta}}$} Intrinsic Josephson Junctions

Kazuo Kadowaki·Manabu Tsujimoto·Kazuhiro Yamaki·Takashi Yamamoto·Takanari Kashiwagi·Hidetoshi Minami·Masashi Tachiki·Richard A. Klemm
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Abstract

The THz radiation emitted from rectangular mesas of single-crystal $\mathrm{Bi_2Sr_2CaCu_2O_{8+\delta}}$ was studied using angular distribution measurements and Fourier transform infrared spectroscopy. Unlike the recent theoretical predictions, the results provide strong evidence for a dual-source mechanism in which the uniform and non-uniform parts of the $ac$-Josephson current act as electric and magnetic current sources, respectively. The latter synchronizes with cavity modes of the mesa with integral harmonics of the fundamental radiation.

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Kazuo Kadowaki, Manabu Tsujimoto, Kazuhiro Yamaki, Takashi Yamamoto, Takanari Kashiwagi, Hidetoshi Minami, Masashi Tachiki, Richard A. Klemm. 2009-12-16. Evidence for a Dual-Source Mechanism of THz Radiation from Rectangular Mesas of Single Crystalline \bm{$\mathrm{Bi_2Sr_2CaCu_2O_{8+\delta}}$} Intrinsic Josephson Junctions. https://doi.org/10.1143/jpsj.79.023703

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