ENHANCED THZ RADIATION FROM YBCO THIN-FILM BOW-TIE ANTENNAS WITH HYPER-HEMISPHERICAL MGO LENS

Authors
TONOUCHI M TANI M WANG Z SAKAI K HANGYO M WADA N MURAKAMI Y
Citation
M. Tonouchi et al., ENHANCED THZ RADIATION FROM YBCO THIN-FILM BOW-TIE ANTENNAS WITH HYPER-HEMISPHERICAL MGO LENS, IEEE transactions on applied superconductivity, 7(2), 1997, pp. 2913-2916
Citations number
9
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on applied superconductivity → ACNP
ISSN journal
10518223
Volume
7
Issue
2
Year of publication
1997
Part
3
Pages
2913 - 2916
Database
ISI
SICI code
1051-8223(1997)7:2<2913:ETRFYT>2.0.ZU;2-O
Abstract
We demonstrate power enhancement of terahertz (THz) radiation from YBC O thin films. An ultra-wide-band electromagnetic pulse, which contains frequency components over 3 THz, was excited by ultrafast supercurren t modulation with femtosecond optical pulse irradiation. The maximum T Hz radiation power emitted into free space was achieved up to 0.5 mu W with the combination of a bow-tie antenna and an MgO hyper-hemispheri cal lens. We discuss the radiation power dependence on temperature, ex citation power, and bias supercurrent.