Title :
Terahertz optoelectronics in high-T/sub c/ superconductors
Author :
Sakai, Kenji ; Tani, Motoaki ; Abe, H. ; Hangyo, M. ; Tonouchi, Masayoshi
Author_Institution :
Kansai Adv. Res. Center, Minist. of Posts & Telecommun., Hyogo, Japan
Abstract :
Summary form only given. We discovered that if the supercurrent is modulated by femtosecond laser pulses that have a sufficient high speed, as in the case of the photoconductive antenna, the ultrashort electromagnetic (EM) pulses with several hundreds femtoseconds time width can be emitted from high-T/sub c/ superconductors. These EM pulses contain a wide range of Fourier components ranging from 0.1 to a few terahertz.
Keywords :
high-speed optical techniques; high-temperature superconductors; optical modulation; optoelectronic devices; submillimetre wave antennas; superconducting microwave devices; superconducting thin films; Fourier components; HTSC films; bow-tie antenna; coplanar transmission line; femtosecond laser pulses; modulated supercurrent; photoconductive antenna; terahertz optoelectronics; ultrashort electromagnetic pulses; Antenna measurements; Electrons; High temperature superconductors; Laser excitation; Magnetic field measurement; Magnetic fields; Power lasers; Submillimeter wave measurements; Surface emitting lasers; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 1998. CLEO 98. Technical Digest. Summaries of papers presented at the Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-339-0
DOI :
10.1109/CLEO.1998.675870
