Title :
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
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;
Conference_Titel :
Microwave Photonics, 1996. MWP '96. Technical Digest., 1996 Internatonal Topical Meeting on
Conference_Location :
Kyoto, Japan
Print_ISBN :
0-7803-3129-X
DOI :
10.1109/MWP.1996.662054
