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dc.contributor.authorShi, Jinweien_US
dc.contributor.authorLiang, Wei-Yunen_US
dc.contributor.authorRaja, Soniya S.en_US
dc.contributor.authorSang, Yungangen_US
dc.contributor.authorZhang, Xin-Quanen_US
dc.contributor.authorChen, Chun-Anen_US
dc.contributor.authorWang, Yanrongen_US
dc.contributor.authorYang, Xinyueen_US
dc.contributor.authorLee, Yi-Hsienen_US
dc.contributor.authorAhn, Hyeyoungen_US
dc.contributor.authorGwo, Shangjren_US
dc.date.accessioned2019-04-02T06:00:29Z-
dc.date.available2019-04-02T06:00:29Z-
dc.date.issued2018-10-01en_US
dc.identifier.issn1863-8880en_US
dc.identifier.urihttp://dx.doi.org/10.1002/lpor.201800188en_US
dc.identifier.urihttp://hdl.handle.net/11536/148273-
dc.description.abstractMonolayer transition metal dichalcogenides (TMDCs) have large second-order optical nonlinearity owing to broken inversion symmetry in two-dimensional (2D) crystals. However, despite the strong light-matter coupling in monolayer TMDCs, their nonlinear responses are ultimately limited by subnanometer thickness. Here, a dramatic enhancement of the second-harmonic generation (SHG) is achieved from monolayer tungsten disulfide (WS2) incorporated onto a 2D silver (Ag) nanogroove grating with subwavelength pitch. By tuning surface plasmon mode and second-harmonic frequency in resonance with the C exciton in WS2, a large SHG enhancement factor (approximate to 400) and a large conversion efficiency (approximate to 2.0 x 10(-5)) can be obtained. Furthermore, the azimuthal angle dependence of polarized SHG from monolayer WS2 can be manipulated by the nanogroove plasmonic mode. Based on this property, a polarization-modulated optical encoding technique is demonstrated. The results suggest that 2D TMDC-plasmonic hybrid metasurface structures can provide an ideal integration platform for on-chip nonlinear photonics and plasmonics.en_US
dc.language.isoen_USen_US
dc.subject2D materialsen_US
dc.subjectnonlinear opticsen_US
dc.subjectplasmonic metasurfacesen_US
dc.subjectsecond-harmonic generationen_US
dc.subjecttransition metal dichalcogenidesen_US
dc.titlePlasmonic Enhancement and Manipulation of Optical Nonlinearity in Monolayer Tungsten Disulfideen_US
dc.typeArticleen_US
dc.identifier.doi10.1002/lpor.201800188en_US
dc.identifier.journalLASER & PHOTONICS REVIEWSen_US
dc.citation.volume12en_US
dc.contributor.department光電工程學系zh_TW
dc.contributor.departmentDepartment of Photonicsen_US
dc.identifier.wosnumberWOS:000446992400011en_US
dc.citation.woscount2en_US
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