Observation of intense second harmonic generation from MoS 2 atomic crystals
By L. Malard, T. V. Alencar, A. P. Barboza, K. Mak, A. M. Paula. 2013
563 citations recorded by the source corpus.
The nonlinear optical properties of few-layer MoS${}_{2}$ two-dimensional crystals are studied using femtosecond laser pulses. We observed highly efficient second-harmonic generation from the odd-layer crystals, which shows a polarization intensity dependence that directly reveals the underlying symmetry and orientation of the crystal. Additionally, the measured second-order susceptibility spectra provide information about the electronic structure of the material. Our results open up opportunities for studying the nonlinear optical properties in these two-dimensional crystals.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/fddb2ca284bda2700dbf20e5850a31634e16cce8
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In Atomic and Molecular Physics, and Optics
- A. Krasnok
- Andrea Alù
- Mykhailo Tymchenko
- Qing Zhang
- R. Ganatra
- Nader Engheta
- Francesco Monticone
- R. Fleury
In Materials Chemistry
Citations in the corpus
- Few-layer MoS2: a promising layered semiconductor. (2014, methodology): “Optical second harmonic microscopy is a very useful tool in characterizing mono- to trilayer MoS2 and determining crystal orientation, crystal domain, size, and layer stacking.(68,69)”
- Momentum-space indirect interlayer excitons in transition-metal dichalcogenide van der Waals heterostructures (2018, methodology): “The ILE PL, which is the most prominent emission peak at room temperature, decreases relative to the MoS2 intralayer emission as the temperature decreases, in stark contrast to the behavior for ILE of the K − K type observed in WSe2-MoS2 heterobilayers, where the ILE PL yield monotonously increases ”