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Tsujimoto M, Yamamoto T, Delfanazari K, et al. Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconducting Bi2Sr2CaCu2O(8+δ) single crystals. Phys Rev Lett. 2012;108(10):107006doi: 10.1103/PhysRevLett.108.107006.
Tsujimoto, M., Yamamoto, T., Delfanazari, K., Nakayama, R., Kitamura, T., Sawamura, M., Kashiwagi, T., Minami, H., Tachiki, M., Kadowaki, K., & Klemm, R. A. (2012). Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconducting Bi2Sr2CaCu2O(8+δ) single crystals. Physical review letters, 108(10), 107006. https://doi.org/10.1103/PhysRevLett.108.107006
Tsujimoto, Manabu, et al. "Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconducting Bi2Sr2CaCu2O(8+δ) single crystals." Physical review letters vol. 108,10 (2012): 107006. doi: https://doi.org/10.1103/PhysRevLett.108.107006
Tsujimoto M, Yamamoto T, Delfanazari K, Nakayama R, Kitamura T, Sawamura M, Kashiwagi T, Minami H, Tachiki M, Kadowaki K, Klemm RA. Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconducting Bi2Sr2CaCu2O(8+δ) single crystals. Phys Rev Lett. 2012 Mar 09;108(10):107006. doi: 10.1103/PhysRevLett.108.107006. Epub 2012 Mar 09. PMID: 22463446.
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Phys Rev Lett. 2012 Mar 09;108(10):107006. doi: 10.1103/PhysRevLett.108.107006. Epub 2012 Mar 09.

Broadly tunable subterahertz emission from internal branches of the current-voltage characteristics of superconducting Bi2Sr2CaCu2O(8+δ) single crystals.

Physical review letters

Manabu Tsujimoto, Takashi Yamamoto, Kaveh Delfanazari, Ryo Nakayama, Takeo Kitamura, Masashi Sawamura, Takanari Kashiwagi, Hidetoshi Minami, Masashi Tachiki, Kazuo Kadowaki, Richard A Klemm

Affiliations

  1. Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8573, Japan.

PMID: 22463446 DOI: 10.1103/PhysRevLett.108.107006

Abstract

Continuous, coherent subterahertz radiation arises when a dc voltage is applied across a stack of the many intrinsic Josephson junctions in a Bi2Sr2CaCu2O(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.

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