Giant Enhancement of the Optical Second-Harmonic Emission of WSe_{2} Monolayers by Laser Excitation at Exciton Resonances

Author(s): G. Wang, X. Marie, I. Gerber, T. Amand, D. Lagarde, L. Bouet, M. Vidal, A. Balocchi, and B. Urbaszek

A three-order of magnitude increase in the optical second-harmonic emission of WSe₂ monolayers is detected by tuning the exciting laser beam to the WSe₂ exciton resonances.

[Phys. Rev. Lett. 114, 097403] Published Wed Mar 04, 2015