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Development of high-Tc superconducting THz emitters

Conference Paper (2019)
Author(s)

T. Kashiwagi (University of Tsukuba)

S. Nakagawa (University of Tsukuba)

T. Imai (University of Tsukuba)

G. Kuwano (University of Tsukuba)

Y. Kaneko (University of Tsukuba)

Y. Ono (University of Tsukuba)

S. Kusunose (University of Tsukuba)

T. Yamamoto (TU Delft - QuTech Advanced Research Centre, TU Delft - Quantum Internet Division)

H. Minami (University of Tsukuba)

M. Tsujimoto (University of Tsukuba)

K. Kadowaki (University of Tsukuba)

Research Institute
QuTech Advanced Research Centre
DOI related publication
https://doi.org/10.1109/IRMMW-THz.2019.8874579 Final published version
More Info
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Publication Year
2019
Language
English
Research Institute
QuTech Advanced Research Centre
Volume number
2019-September
Article number
8874579
ISBN (electronic)
978-1-5386-8285-2
Event
44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 (2019-09-01 - 2019-09-06), Paris, France
Downloads counter
258

Abstract

Since the discovery of continuous, coherent THz radiation from intrinsic Josephson junctions (IJJs) constructed in the single crystals of Bi2Sr2CaCu2O8+δ in 2007, various types of device structures have been developed. Thermal management of Joule heat in the IJJ mesa structure is the most important issue to improve the radiation characteristics of the IJJ-THz emitters. The radiation frequencies ranging from 0.3 to 2.4 THz, the emission power of $ \sim 30$ pW/mesa and the radiation linewidth of 0.2 GHz at $ \sim 0.5$ THz were obtained from the thermal managed device structures so far. We show a brief overview of the IJJ-THz emitters in our group.