Terahertz radiation from superconducting YBa2Cu3O7-delta thin films with 1.55 mu m excitation

Authors
Kondo, T Tonouchi, M Hangyo, M
Citation
T. Kondo et al., Terahertz radiation from superconducting YBa2Cu3O7-delta thin films with 1.55 mu m excitation, JPN J A P 1, 40(2A), 2001, pp. 640-643
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS → ACNP
Volume
40
Issue
2A
Year of publication
2001
Pages
640 - 643
Database
ISI
SICI code
Abstract
We observed terahertz (THz) radiation from superconducting YBa2Cu3O7-delta (YBCO) thin films excited by femtosecond laser pulses with a center wavelen gth around 1.55 mum. The THz radiation mechanism is revealed to be a one ph oton excitation process corresponding to an intraband transition in the in- gap state. The property of the THz radiation excited by a 1.55 mum laser is similar to that excited by an 800 nm laser.