Nature Communications (Oct 2017)

Ultra-strong nonlinear optical processes and trigonal warping in MoS2 layers

  • Antti Säynätjoki,
  • Lasse Karvonen,
  • Habib Rostami,
  • Anton Autere,
  • Soroush Mehravar,
  • Antonio Lombardo,
  • Robert A. Norwood,
  • Tawfique Hasan,
  • Nasser Peyghambarian,
  • Harri Lipsanen,
  • Khanh Kieu,
  • Andrea C. Ferrari,
  • Marco Polini,
  • Zhipei Sun

DOI
https://doi.org/10.1038/s41467-017-00749-4
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 8

Abstract

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Harmonic generation is a nonlinear optical process occurring in a variety of materials; the higher orders generation is generally less efficient than lower orders. Here, the authors report that the third-harmonic is thirty times stronger than the second-harmonic in monolayer MoS2.