@article{064976b3ffc84e1989d672030d7c9509,
title = "Third order nonlinear optical response exhibited by mono- and fewlayers of WS2",
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.",
author = "Carlos Torres-Torres and N{\'e}stor Perea-L{\'o}pez and El{\'i}as, {Ana Laura} and Humberto Rguti{\'e}rrez and David Acullen and Ayse Berkdemir and Florentino L{\'o}pez-Ur{\'i}as and Humberto Terrones and Mauricio Terrones",
note = "Funding Information: This work is supported by the US Army Research Office MURI grant W911NF-11-1-0362, the National Science Foundation (EFRI-1433311), the Materials Simulation Center of the Materials Research Institute, the Research Computing and Cyberinfrastructure unit of Information Technology Services, and Penn State Center for Nanoscale Science. MT also acknowledges support from the Penn State Center for Nanoscale Science for a seed grant on 2D Layered Materials (DMR-0820404). The authors also acknowledge the Center for 2-Dimensional and Layered Materials. CTT gratefully acknowledges the financial support from Instituto Polit{\'e}cnico Nacional and CONACyT. HRG acknowledges support from National Science Foundation (DMR-1557434). Research supported through a user project supported by ORNL's Center for Nanophase Materials Sciences (CNMS), which is a Department of Energy, Officeof Science User Facility. Publisher Copyright: {\textcopyright} 2016 IOP Publishing Ltd.",
year = "2016",
month = apr,
day = "13",
doi = "10.1088/2053-1583/3/2/021005",
language = "English (US)",
volume = "3",
journal = "2D Materials",
issn = "2053-1583",
publisher = "IOP Publishing Ltd.",
number = "2",
}