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Enhanced Directional Emission from Monolayer WSe2 Integrated onto a Multiresonant Silicon-Based Photonic Structure

Chen, Haitao; Nanz, Stefan; Abass, Aimi K.; Yan, Jingshi; Gao, Tingge; Choi, Duk-Yong; Kivshar, Yuri; Rockstuhl, Carsten; Neshev, Dragomir

Description

Two-dimensional transition-metal dichalcogenides such as WSe2 show great promise as versatile atomic-scale light sources for on-chip applications due to their advanced optoelectronic properties and compatibility with a silicon photonics platform. However, the sub-nanometer thickness of such active materials limits their emission efficiency. Hence, new approaches to simultaneously enhance the emission and control its directionality are required. Here, we demonstrate enhanced and directional...[Show more]

dc.contributor.authorChen, Haitao
dc.contributor.authorNanz, Stefan
dc.contributor.authorAbass, Aimi K.
dc.contributor.authorYan, Jingshi
dc.contributor.authorGao, Tingge
dc.contributor.authorChoi, Duk-Yong
dc.contributor.authorKivshar, Yuri
dc.contributor.authorRockstuhl, Carsten
dc.contributor.authorNeshev, Dragomir
dc.date.accessioned2020-01-24T05:14:59Z
dc.identifier.issn2330-4022
dc.identifier.urihttp://hdl.handle.net/1885/199781
dc.description.abstractTwo-dimensional transition-metal dichalcogenides such as WSe2 show great promise as versatile atomic-scale light sources for on-chip applications due to their advanced optoelectronic properties and compatibility with a silicon photonics platform. However, the sub-nanometer thickness of such active materials limits their emission efficiency. Hence, new approaches to simultaneously enhance the emission and control its directionality are required. Here, we demonstrate enhanced and directional emission from a WSe2 monolayer integrated onto a silicon photonic structure. This is achieved by coupling of the WSe2 layer to a multiresonant silicon grating-waveguide structure. The interaction with the multiple resonant modes supported by the structure provides simultaneous excitation and emission enhancement, while the dispersion of the modes further routes the emission into specified directions. In addition, our hybrid structure offers the opportunity for ultrafast emission modulation, owing to the reduced emission lifetime of WSe2. Such a silicon-based hybrid platform is fully scalable and promising as efficient chip-integrated and spatially multiplexed light sources.
dc.description.sponsorshipWe acknowledge the financial support by the Australian Research Council through Discovery projects, Group of Eight AustraliaGermany Joint Research Cooperation Scheme, and the use of the Australian National Fabrication Facility (ANFF), the ACT Node. H.C. acknowledges financial support of the China Scholarship Council for Ph.D. scholarship no. 201206110047. We further acknowledge financial support by the Karlsruhe School of Optics and Photonics and by the DFG Priority Programm 1839 Tailored Disorder. We are also grateful to the company JCMwave for their free provision of the FEM Maxwell solver JCMsuite, with which the simulations in this work have been performed.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherAmerican Chemical Society
dc.rights© 2017 American Chemical Society
dc.sourceACS Photonics
dc.titleEnhanced Directional Emission from Monolayer WSe2 Integrated onto a Multiresonant Silicon-Based Photonic Structure
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume4
dc.date.issued2017
local.identifier.absfor020504 - Photonics, Optoelectronics and Optical Communications
local.identifier.ariespublicationa383154xPUB9878
local.publisher.urlhttps://pubs.acs.org/
local.type.statusPublished Version
local.contributor.affiliationChen, Haitao, College of Science, ANU
local.contributor.affiliationNanz, Stefan, Karlsruhe Institute of Technology
local.contributor.affiliationAbass, Aimi K., Karlsruhe Institute of Technology
local.contributor.affiliationYan, Jingshi, College of Science, ANU
local.contributor.affiliationGao, Tingge, College of Science, ANU
local.contributor.affiliationChoi, Duk-Yong, College of Science, ANU
local.contributor.affiliationKivshar, Yuri, College of Science, ANU
local.contributor.affiliationRockstuhl, Carsten, Karlsruhe Institute of Technology
local.contributor.affiliationNeshev, Dragomir, College of Science, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue12
local.bibliographicCitation.startpage3031
local.bibliographicCitation.lastpage3038
local.identifier.doi10.1021/acsphotonics.7b00550
local.identifier.absseo970102 - Expanding Knowledge in the Physical Sciences
dc.date.updated2019-11-25T07:24:16Z
local.identifier.scopusID2-s2.0-85038585984
CollectionsANU Research Publications

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