Second harmonic microscopy of monolayer MoS2

dc.citation.firstpage161403(R)en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber87en_US
dc.contributor.authorKumar, Nardeepen_US
dc.contributor.authorNajmaei, Sinaen_US
dc.contributor.authorCui, Qiannanen_US
dc.contributor.authorCeballos, Franken_US
dc.contributor.authorAjayan, Pulickel M.en_US
dc.contributor.authorLou, Junen_US
dc.contributor.authorZhao, Huien_US
dc.contributor.orgMechanical Engineeringen_US
dc.date.accessioned2013-04-24T15:32:37Zen_US
dc.date.available2013-04-24T15:32:37Zen_US
dc.date.issued2013en_US
dc.description.abstractWe show that the lack of inversion symmetry in monolayer MoS2 allows strong optical second harmonic generation. The second harmonic of an 810-nm pulse is generated in a mechanically exfoliated monolayer, with a nonlinear susceptibility on the order of 10−7 m/V. The susceptibility reduces by a factor of seven in trilayers, and by about two orders ofmagnitude in even layers. A proof-of-principle second harmonicmicroscopymeasurement is performed on samples grown by chemical vapor deposition, which illustrates potential applications of this effect in the fast and noninvasive detection of crystalline orientation, thickness uniformity, layer stacking, and single-crystal domain size of atomically thin films of MoS2 and similar materials.en_US
dc.embargo.termsnoneen_US
dc.identifier.citationKumar, Nardeep, Najmaei, Sina, Cui, Qiannan, et al.. "Second harmonic microscopy of monolayer MoS2." <i>Physical Review B,</i> 87, (2013) American Physical Society: 161403(R). http://dx.doi.org/10.1103/PhysRevB.87.161403.en_US
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.87.161403en_US
dc.identifier.urihttps://hdl.handle.net/1911/70968en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleSecond harmonic microscopy of monolayer MoS2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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