Please use this identifier to cite or link to this item: https://doi.org/10.1364/OL.37.001856
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dc.titleZ-scan measurement of the nonlinear refractive index of graphene
dc.contributor.authorZhang, H.
dc.contributor.authorVirally, S.
dc.contributor.authorBao, Q.
dc.contributor.authorKian Ping, L.
dc.contributor.authorMassar, S.
dc.contributor.authorGodbout, N.
dc.contributor.authorKockaert, P.
dc.date.accessioned2014-10-16T08:47:42Z
dc.date.available2014-10-16T08:47:42Z
dc.date.issued2012-06-01
dc.identifier.citationZhang, H., Virally, S., Bao, Q., Kian Ping, L., Massar, S., Godbout, N., Kockaert, P. (2012-06-01). Z-scan measurement of the nonlinear refractive index of graphene. Optics Letters 37 (11) : 1856-1858. ScholarBank@NUS Repository. https://doi.org/10.1364/OL.37.001856
dc.identifier.issn01469592
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/95426
dc.description.abstractUnder strong laser illumination, few-layer graphene exhibits both a transmittance increase due to saturable absorption and a nonlinear phase shift. Here, we unambiguously distinguish these two nonlinear optical effects and identify both real and imaginary parts of the complex nonlinear refractive index of graphene. We show that graphene possesses a giant nonlinear refractive index n2 ≃ 10-7 cm2 W-1, almost 9 orders of magnitude larger than bulk dielectrics. We find that the nonlinear refractive index decreases with increasing excitation flux but slower than the absorption. This suggests that graphene may be a very promising nonlinear medium, paving the way for graphene-based nonlinear photonics. © 2012 Optical Society of America.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1364/OL.37.001856
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentCHEMISTRY
dc.description.doi10.1364/OL.37.001856
dc.description.sourcetitleOptics Letters
dc.description.volume37
dc.description.issue11
dc.description.page1856-1858
dc.description.codenOPLED
dc.identifier.isiut000305085000026
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