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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Characterization of the second- and third-order nonlinear optical susceptibilities of monolayer MoS2 using multiphoton microscopy

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Author(s):
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Woodward, R. I. [1] ; Murray, R. T. [1] ; Phelan, C. F. [2] ; de Oliveira, R. E. P. [2] ; Runcorn, T. H. [1] ; Kelleher, E. J. R. [1] ; Li, S. [3] ; de Oliveira, E. C. [2] ; Fechine, G. J. M. [2] ; Eda, G. [3] ; de Matos, C. J. S. [2]
Total Authors: 11
Affiliation:
[1] Imperial Coll London, Dept Phys, Femtosecond Opt Grp, London - England
[2] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, Sao Paulo - Brazil
[3] Natl Univ Singapore, Ctr Adv Mat 2D, Singapore - Singapore
Total Affiliations: 3
Document type: Journal article
Source: 2D MATERIALS; v. 4, n. 1 MAR 2017.
Web of Science Citations: 40
Abstract

We report second- and third-harmonic generation in monolayer MoS2 as a tool for imaging and accurately characterizing the material's nonlinear optical properties under 1560 nm excitation. Using a surface nonlinear optics treatment, we derive expressions relating experimental measurements to second- and third-order nonlinear sheet susceptibility magnitudes, obtaining values of vertical bar chi((2))(s)vertical bar = 2.0 x 10(-20) m(2) V-1 and, for the first time formonolayer MoS2, vertical bar chi((3))(s)vertical bar= 1.7 x 10(-28) m(3) V-2. These sheet susceptibilities correspond to effective bulk nonlinear susceptibility values of vertical bar chi((2))(b)vertical bar= 2.9 x 10(-11m). V-1 and vertical bar chi((3))(b)vertical bar= 2.4 x 10(-19) m(2) V-2, accounting for the sheet thickness. Experimental comparisons between MoS2 and graphene are also performed, demonstrating similar to 3.4 times stronger third order sheet nonlinearity inmonolayer MoS2, highlighting the material's potential for nonlinear photonics in the telecommunications C band. (AU)

FAPESP's process: 14/50460-0 - Optical nonlinearity in waveguides and substrates containing graphene and graphene-like materials: a collaboration between the femtosecond Optics Group (fog IC) and the graphene
Grantee:Christiano José Santiago de Matos
Support type: Regular Research Grants
FAPESP's process: 15/11779-4 - Plasmonic and nonlinear effects in graphene coupled to optical waveguides
Grantee:Christiano José Santiago de Matos
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
Grantee:Antônio Hélio de Castro Neto
Support type: Research Projects - SPEC Program
FAPESP's process: 15/12734-4 - Design, production and characterization of optical waveguides for plasmid excitation in graphene
Grantee:Ciaran Phelan
Support type: Scholarships in Brazil - Post-Doctorate