Terahertz radiation excited by ultrafast supercurrent modulation [of YBCO thin films]

Author

Tonouchi, M. ; Tani, M. ; Wang, Z. ; Sakai, K. ; Wada, N. ; Hangyo, M.

Author_Institution

Commun. Res. Lab., Kansai Adv. Res. Center, Iwaoka, Japan

fYear

1996

fDate

5-5 Dec. 1996

Firstpage

9

Lastpage

12

Abstract

We realized a new type of terahertz radiation by an ultrafast supercurrent modulation in high-T/sub c/ superconductors with femtosecond laser pulse irradiation. Sub-/spl mu/W radiation into free space with a pulse width of 0.4 ps was detected.

Keywords

barium compounds; dipole antennas; high-speed optical techniques; high-temperature superconductors; infrared sources; laser beam effects; submillimetre wave antennas; superconducting devices; superconducting thin films; yttrium compounds; 0.1 to 4 THz; 0.4 ps; YBaCuO; dipole antennas; femtosecond laser pulse irradiation; free-space sub-/spl mu/W radiation; high-T/sub c/ superconductors; pulse width; superconducting optoelectronics; terahertz radiation; ultrafast supercurrent modulation; Charge carrier density; Dipole antennas; EMP radiation effects; Electromagnetic radiation; Electromagnetic scattering; Laser excitation; Optical films; Optical pulses; Pulse modulation; Yttrium barium copper oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Photonics, 1996. MWP '96. Technical Digest., 1996 Internatonal Topical Meeting on

Conference_Location

Kyoto, Japan

Print_ISBN

0-7803-3129-X

Type

conf

DOI

10.1109/MWP.1996.662054

Filename

662054