Backscattered terahertz radiation imaging system to visualize supercurrent distributions

Author

Kiwa, T. ; Kamata, Y. ; Misra, M. ; Murakami, H. ; Tonouchi, M.

Author_Institution

Res. Center for Supercond. Photonics, Osaka Univ., Japan

Volume

13

Issue

2

fYear

2003

fDate

6/1/2003 12:00:00 AM

Firstpage

3675

Lastpage

3678

Abstract

A new type of terahertz (THz) radiation imaging has been proposed and demonstrated. The supercurrent distributions were visualized by detecting the backscattered THz radiation from optically excited high-temperature superconductors. The supercurrent distributions were clearly observed in 100and 500-nm-thick YBa₂Cu₃O_7-δ films in the remanent state. Our system has performance similar to the system with transmission configuration.

Keywords

barium compounds; high-temperature superconductors; microwave imaging; superconducting microwave devices; superconducting thin films; yttrium compounds; 100 nm; 500 nm; YBa₂Cu₃O_7-δ; YBa₂Cu₃O_7-δ films; backscattered terahertz radiation imaging system; optically excited high-temperature superconductors; remanent state; visualize supercurrent distributions; High temperature superconductors; Laser excitation; Laser mode locking; Optical films; Optical pulse generation; Optical pulses; Pulse amplifiers; Radiation imaging; Ultrafast optics; Visualization;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2003.812428

Filename

1212425