ULTRAFAST PHOTOEXCITED QUASI-PARTICLE DYNAMICS IN YBCO FILMS OBSERVEDBY THZ EMISSION

Authors
HANGYO M TOMOZAWA S MURAKAMI Y TONOUCHI M TANI M WANG Z SAKAI K
Citation
M. Hangyo et al., ULTRAFAST PHOTOEXCITED QUASI-PARTICLE DYNAMICS IN YBCO FILMS OBSERVEDBY THZ EMISSION, IEEE transactions on applied superconductivity, 7(2), 1997, pp. 2909-2912
Citations number
14
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
2909 - 2912
Database
ISI
SICI code
1051-8223(1997)7:2<2909:UPQDIY>2.0.ZU;2-P
Abstract
We observed a femtosecond time-transient nonequilibrium state in optic ally excited YBCO thin films for the first time. Ultrashort electromag netic pulses were radiated from the films by an ultrafast supercurrent modulation with fs laser pulse irradiation. Quasiparticle dynamics wa s characterized by the analysis of the emission waveforms based on Rot hwarf-Taylor rate equations.