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 journalArticlepeer-review

94 Scopus citations


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 languageEnglish (US)
Article number045015
Journal2D Materials
Issue number4
StatePublished - Dec 16 2015

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Second harmonic generation in WSe2'. Together they form a unique fingerprint.

Cite this