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dc.contributor.authorDuong, Ngoc My Hanh
dc.contributor.authorXu, Zai-Quan
dc.contributor.authorKianinia, Mehran
dc.contributor.authorSu, Rongbin
dc.contributor.authorLiu, Zhuojun
dc.contributor.authorKim, Sejeong
dc.contributor.authorBradac, Carlo
dc.contributor.authorTran, Toan Trong
dc.contributor.authorWan, Yi
dc.contributor.authorLi, Lain-Jong
dc.contributor.authorSolntsev, Alexander
dc.contributor.authorLiu, Jin
dc.contributor.authorAharonovich, Igor
dc.date.accessioned2019-03-14T14:16:37Z
dc.date.available2019-03-14T14:16:37Z
dc.date.issued2018-09-10
dc.identifier.citationDuong NMH, Xu Z-Q, Kianinia M, Su R, Liu Z, et al. (2018) Enhanced Emission from WSe2 Monolayers Coupled to Circular Bragg Gratings. ACS Photonics 5: 3950–3955. Available: http://dx.doi.org/10.1021/acsphotonics.8b00865.
dc.identifier.issn2330-4022
dc.identifier.issn2330-4022
dc.identifier.doi10.1021/acsphotonics.8b00865
dc.identifier.urihttp://hdl.handle.net/10754/631614
dc.description.abstractTwo-dimensional transition-metal dichalcogenides (TMDC) are of great interest for on-chip nanophotonics due to their unique optoelectronic properties. Here, we propose and realize coupling of tungsten diselenide (WSe) monolayers to circular Bragg grating structures to achieve enhanced emission. The interaction between WSe and the resonant mode of the structure results in Purcell-enhanced emission, and the symmetric geometrical structure improves the directionality of the out-coupling stream of emitted photons. Furthermore, this hybrid structure produces a record high contrast of the spin valley readout (>40%) revealed by the polarization-resolved photoluminescence (PL) measurements. Our results are promising for on-chip integration of TMDC monolayers with optical resonators for nanophotonic circuits.
dc.description.sponsorshipThe authors are thankful for financial support from the Australian Research council (via DP180100077, DE180100070, DE 1801100810), the Asian Office of Aerospace Research and Development grant FA2386-17-1-4064, the Office of Naval Research Global under grant number N62909-18-1-2025, National Key R & D Program of China (Grants No. 2018YFA0306100), the National Natural Science Foundation of China (Grant No. 11874437), Guangzhou Science and Technology project (Grant No. 201805010004). This research is supported by an Australian Government Research Training Program Scholarship.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsphotonics.8b00865
dc.subject2D materials
dc.subjectcircular Bragg grating
dc.subjecton-chip photonics
dc.subjectPurcell enhancement
dc.subjectvalley polarization
dc.titleEnhanced Emission from WSe2 Monolayers Coupled to Circular Bragg Gratings
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Photonics
dc.contributor.institutionSchool of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, New South Wales 2007, Australia
dc.contributor.institutionSchool of Physics, Sun Yat-sen University, Guangzhou 510275, China
dc.identifier.arxivid1806.06515
kaust.personWan, Yi
kaust.personLi, Lain-Jong
dc.versionv1
dc.date.published-online2018-09-10
dc.date.published-print2018-10-17
dc.date.posted2018-06-18


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