Third harmonic generation in graphene and few-layer graphite films

By Nardeep Kumar, J. Kumar, Christian Gerstenkorn, Rui Wang, Hsin-Ying Chiu, A. Smirl, Hui Zhao. 2013

227 citations recorded by the source corpus.

We observe optical third harmonic generation from graphene and few-layer graphite flakes produced by exfoliation. The emission scales with the cube of the intensity of the incident near-infrared femtosecond pulses and has a wavelength that is one-third of the incident wavelength, both consistent with third harmonic generation. We extract an effective third-order susceptibility for graphene that is on the order of 1e-16 square meter per square volt, which is comparable to that for materials that are resonantly excited, but larger than for materials that are transparent at the fundamental and third harmonic wavelengths. By measuring a set of flakes with different numbers of atomic layers, we find that the emission scales with the square of the number of atomic layers, which suggests that the susceptibility of graphene is independent of layer number, at least for a few layers.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/7f0e9dd1c4e388cd72c26c3868089ed048c36d77

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In Atomic and Molecular Physics, and Optics

In Biomedical Engineering

In Materials Chemistry

Citations in the corpus

Optical Third-Harmonic Generation in Graphene (2013, background): “[40] N.”
High frequency electric field induced nonlinear effects in graphene (2013, background): “[53] the fundamental wavelength is ≈ 1.”