Work

High Temperature Superconductor Terahertz Emitters: Fundamental Physics and Its Applications

Year: 2011

Type: article

Abstract: Coherent and continuous radiation sources of the electromagnetic (EM) waves at terahertz (1 THz = 10 12 c/s) frequencies using a mesa structure fabricated from high temperature superconducting Bi 2 Sr 2 CaCu 2 O 8+δ single crystals are described with a special emphasis on the physics of the radiation mechanism and the applications. After the intensive studies of many mesas fabricated with different conditions, it is revealed that the ac-Josephson effect works as a primary driving mechanism of the radiation and the cavity resonance needed for stronger radiation plays an additional role to the mechanism, although both are working together while radiating. A prototype of the imaging machine for multipurpose uses has successfully been developed.

Source: Japanese Journal of Applied Physics

DOI: 10.7567/jjap.51.010113

Authors: Takanari Kashiwagi, Manabu Tsujimoto, Takashi Yamamoto, Hidetoshi Minami, Kazuhiro Yamaki, Kaveh Delfanazari, Kota Deguchi, Naoki Orita, Takashi Koike, Ryo Nakayama, Takeo Kitamura, Masashi Sawamura, Shota Hagino, Kazuya Ishida, Krsto Ivanovic, Hidehiro Asai, Masashi Tachiki, R. A. Klemm, Kazuo Kadowaki

Institutions: University of Tsukuba, Japan Science and Technology Agency, Research Center for Materials Nanoarchitectonics, Utsunomiya University, University of Central Florida

Language: English

Topic: Superconducting and THz Device Technology

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: University of Tsukuba, National Institute for Materials Science, Core Research for Evolutional Science and Technology

OpenAlex ID: W2001391718

FWCI: 7.802

Cites: 79

Cited by: 114

Related to: 10