Second harmonic generation in WSe2

J. Ribeiro-Soares; C. Janisch; Z. Liu; A. L. Eĺias; M. S. Dresselhaus; M. Terrones; L. G. Cançado; A. Jorio

doi:10.1088/2053-1583/2/4/045015

Second harmonic generation in WSe₂

J. Ribeiro-Soares
, C. Janisch
, Z. Liu
, A. L. Eĺias
, M. S. Dresselhaus
, M. Terrones
, L. G. Cançado
, A. Jorio

Research output: Contribution to journal › Article › peer-review

111 Scopus citations

Abstract

Second harmonic generation of single- and few-layer mechanically exfoliated tungsten diselenide (WSe₂) samples are studied. The value of the effective second-order nonlinear susceptibility for monolayer WSe₂ is obtained, being three orders of magnitude larger than the values usually reported for other nonlinear bulk crystals. The presence of a monolayer is certified by symmetry analysis of the Raman modes and the occurrence of a direct band gap. Our results on WSe₂ solidify the family of transition metal dichalcogenides as two-dimensional systems with ultra high second-order nonlinear susceptibility.

Original language	English (US)
Article number	045015
Journal	2D Materials
Volume	2
Issue number	4
DOIs	https://doi.org/10.1088/2053-1583/2/4/045015
State	Published - Dec 16 2015

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1088/2053-1583/2/4/045015

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title = "Second harmonic generation in WSe2",

abstract = "Second harmonic generation of single- and few-layer mechanically exfoliated tungsten diselenide (WSe2) samples are studied. The value of the effective second-order nonlinear susceptibility for monolayer WSe2 is obtained, being three orders of magnitude larger than the values usually reported for other nonlinear bulk crystals. The presence of a monolayer is certified by symmetry analysis of the Raman modes and the occurrence of a direct band gap. Our results on WSe2 solidify the family of transition metal dichalcogenides as two-dimensional systems with ultra high second-order nonlinear susceptibility.",

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doi = "10.1088/2053-1583/2/4/045015",

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T1 - Second harmonic generation in WSe2

AU - Ribeiro-Soares, J.

AU - Janisch, C.

AU - Liu, Z.

AU - Eĺias, A. L.

AU - Dresselhaus, M. S.

AU - Terrones, M.

AU - Cançado, L. G.

AU - Jorio, A.

PY - 2015/12/16

Y1 - 2015/12/16

N2 - Second harmonic generation of single- and few-layer mechanically exfoliated tungsten diselenide (WSe2) samples are studied. The value of the effective second-order nonlinear susceptibility for monolayer WSe2 is obtained, being three orders of magnitude larger than the values usually reported for other nonlinear bulk crystals. The presence of a monolayer is certified by symmetry analysis of the Raman modes and the occurrence of a direct band gap. Our results on WSe2 solidify the family of transition metal dichalcogenides as two-dimensional systems with ultra high second-order nonlinear susceptibility.

AB - Second harmonic generation of single- and few-layer mechanically exfoliated tungsten diselenide (WSe2) samples are studied. The value of the effective second-order nonlinear susceptibility for monolayer WSe2 is obtained, being three orders of magnitude larger than the values usually reported for other nonlinear bulk crystals. The presence of a monolayer is certified by symmetry analysis of the Raman modes and the occurrence of a direct band gap. Our results on WSe2 solidify the family of transition metal dichalcogenides as two-dimensional systems with ultra high second-order nonlinear susceptibility.

UR - https://www.scopus.com/pages/publications/84953379304

UR - https://www.scopus.com/pages/publications/84953379304#tab=citedBy

U2 - 10.1088/2053-1583/2/4/045015

DO - 10.1088/2053-1583/2/4/045015

M3 - Article

AN - SCOPUS:84953379304

SN - 2053-1583

VL - 2

JO - 2D Materials

JF - 2D Materials

IS - 4

M1 - 045015

ER -

Second harmonic generation in WSe₂

Abstract

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