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dc.contributor.authorLin, PIen_US
dc.contributor.authorLuo, CWen_US
dc.contributor.authorLiu, HSen_US
dc.contributor.authorChen, SFen_US
dc.contributor.authorWu, KHen_US
dc.contributor.authorJuang, JYen_US
dc.contributor.authorUen, TMen_US
dc.contributor.authorGou, YSen_US
dc.contributor.authorLin, JYen_US
dc.date.accessioned2014-12-08T15:38:57Z-
dc.date.available2014-12-08T15:38:57Z-
dc.date.issued2004-06-15en_US
dc.identifier.issn0021-8979en_US
dc.identifier.urihttp://dx.doi.org/10.1063/1.1738537en_US
dc.identifier.urihttp://hdl.handle.net/11536/26670-
dc.description.abstractThe origin of photogenerated terahertz radiation pulse emitted from current-biased superconducting YBa2Cu3O7-delta thin films excited by femtosecond optical laser pulses is delineated. By investigating the performance of the transient terahertz radiation generated under different operating parameters, pulse reshaping in the measured terahertz electric field caused by the kinetic inductance of the superconducting charge carriers is identified. After recovering the original wave forms of the emitted terahertz pulses, the transient supercurrent density directly correlated to the optically excited quasiparticle dynamics is obtained. A fast decreasing component of about 1.0 ps and a slower recovery process with a value of 2.5 ps are unambiguously delineated in the optically induced supercurrent modulation. The radiation mechanism of the transient terahertz pulse related to nonequilibrium superconductivity is discussed. (C) 2004 American Institute of Physics.en_US
dc.language.isoen_USen_US
dc.titleOn the origin of photogenerated terahertz radiation from current-biased superconducting YBa2Cu3O7-delta thin filmsen_US
dc.typeArticleen_US
dc.identifier.doi10.1063/1.1738537en_US
dc.identifier.journalJOURNAL OF APPLIED PHYSICSen_US
dc.citation.volume95en_US
dc.citation.issue12en_US
dc.citation.spage8046en_US
dc.citation.epage8050en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.department物理研究所zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.contributor.departmentInstitute of Physicsen_US
dc.identifier.wosnumberWOS:000221843400074-
dc.citation.woscount1-
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