Publication: IEICE TRANSACTIONS on Electronics Publication Date: 1997/10/25 Vol. E80-CNo. 10pp. 1297-1303 Type of Manuscript: Special Section PAPER (Special Issue on Basic Properties and Applications of Superconductive Electron Devices) Category: Keyword: YBCO, THz radiation, ultrafast optical response, anisotropy, a-axis oriented YBCO film,