J. Dawlaty, S. Shivaraman, M. Chandrashekhar, F. Rana, M. Spencer
{"title":"Probing ultrafast dynamics of electrons and holes in graphene","authors":"J. Dawlaty, S. Shivaraman, M. Chandrashekhar, F. Rana, M. Spencer","doi":"10.1109/CLEO.2008.4551069","DOIUrl":null,"url":null,"abstract":"Using pump-probe techniques, we study the ultrafast relaxation dynamics of photoexcited carriers in graphene. We find an initial fast relaxation transient (70-120 fs), followed by a slower relaxation process (0.4-1.7 ps). We relate the measured time scales to carrier-carrier and carrier-phonon intraband and interband scattering processes and also to crystal disorder in the material.","PeriodicalId":6382,"journal":{"name":"2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science","volume":"26 1","pages":"1-2"},"PeriodicalIF":0.0000,"publicationDate":"2008-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CLEO.2008.4551069","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Using pump-probe techniques, we study the ultrafast relaxation dynamics of photoexcited carriers in graphene. We find an initial fast relaxation transient (70-120 fs), followed by a slower relaxation process (0.4-1.7 ps). We relate the measured time scales to carrier-carrier and carrier-phonon intraband and interband scattering processes and also to crystal disorder in the material.
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