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Title: Third order nonlinear optical response exhibited by mono- and few-layers of WS 2

In this work, strong third order nonlinear optical properties exhibited by WS 2 layers are presented. Optical Kerr effect was identified as the dominant physical mechanism responsible for these third order optical nonlinearities. An extraordinary nonlinear refractive index together with an important contribution of a saturated absorptive response was observed to depend on the atomic layer stacking. Comparative experiments performed in mono- and few-layer samples of WS 2 revealed that this material is potentially capable of modulating nonlinear optical processes by selective near resonant induced birefringence. In conclusion, we envision applications for developing all-optical bidimensional nonlinear optical devices.
 [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. Instituto Politecnico Nacional (Mexico)
  2. The Pennsylvania State Univ., University Park, PA (United States)
  3. Univ. of South Florida, Tampa, FL (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. The Pennsylvania State Univ., University Park, PA (United States); Erciyes Univ., Kayseri (Turkey)
  6. IPICyT, San Luis Potosi (Mexico)
  7. Rensselaer Polytechnic Inst., Troy, NY (United States)
  8. The Pennsylvania State Univ., University Park, PA (United States); Shinshu Univ., Nagano-city (Japan)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
2D Materials
Additional Journal Information:
Journal Volume: 3; Journal Issue: 2; Journal ID: ISSN 2053-1583
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; nonlinear optics; optical Kerr effect; nonlinear optical absorption; WS2; monolayers
OSTI Identifier: