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dc.contributor.authorChang, MCen_US
dc.contributor.authorMeng, HFen_US
dc.date.accessioned2014-12-08T15:01:19Z-
dc.date.available2014-12-08T15:01:19Z-
dc.date.issued1997-11-15en_US
dc.identifier.issn0163-1829en_US
dc.identifier.urihttp://hdl.handle.net/11536/189-
dc.description.abstractWhen the energy of a pump wave is in resonance with the exciton creation energy, the electric susceptibility of a conjugated polymer in response to the probe wave is altered by the exciton gas. In this paper we calculate the dependence of this change on the exciton populations by the equation of motion (EOM) method. The magnitude of optical nonlinearity is also influenced by ambient temperature, by the extent of exciton wave functions, and by the strength of electron-electron interaction. All of these factors can be easily incorporated in the EOM approach systematically. Using the material parameters for polydiacetylene, the optical Ken coefficient n(2) obtained is about 10(-8) cm(2)/W, which is close to experimental value, and is four orders of magnitude larger than the value in nonresonant pump experiments.en_US
dc.language.isoen_USen_US
dc.titleResonant optical nonlinearity of conjugated polymersen_US
dc.typeArticleen_US
dc.identifier.journalPHYSICAL REVIEW Ben_US
dc.citation.volume56en_US
dc.citation.issue19en_US
dc.citation.spage12277en_US
dc.citation.epage12284en_US
dc.contributor.department物理研究所zh_TW
dc.contributor.departmentInstitute of Physicsen_US
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