Third order nonlinear optical response exhibited by mono- and fewlayers of WS2

Carlos Torres-Torres, Néstor Perea-López, Ana Laura Elías, Humberto Rgutiérrez, David Acullen, Ayse Berkdemir, Florentino López-Urías, Humberto Terrones, Mauricio Terrones

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27 Scopus citations

Abstract

In this work, strong third order nonlinear optical properties exhibited by WS2layers are presented. Optical Kerr effect was identifiedasthe dominant physical mechanism responsible for these third order optical nonlinearities. An extraordinary nonlinear refractive index together with an important contributionofasaturated absorptive response was observedto dependon the atomic layer stacking. Comparative experiments performedinmono- and few-layer samples of WS2 revealed that this material is potentially capable of modulating nonlinear optical processes by selective near resonant induced birefringence. We envision applications for developing all-optical bidimensional nonlinear optical devices.

Original languageEnglish (US)
Article number021005
Journal2D Materials
Volume3
Issue number2
DOIs
StatePublished - Apr 13 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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