Cavity enhanced third harmonic generation in graphene
Beckerleg, C; Constant, TJ; Zeimpekis, I; et al.Hornett, SM; Craig, C; Hewak, DW; Hendry, E
Date: 4 January 2018
Journal
Applied Physics Letters
Publisher
AIP Publishing
Publisher DOI
Abstract
Graphene displays a surprisingly large third order nonlinearity. Here, we report that conversion efficiencies approaching 10 -4 are possible for third harmonic generation (THG). Moreover, the atomically thin nature of graphene allows for simple integration in cavity designs to increase this even further. We demonstrate a 117-fold ...
Graphene displays a surprisingly large third order nonlinearity. Here, we report that conversion efficiencies approaching 10 -4 are possible for third harmonic generation (THG). Moreover, the atomically thin nature of graphene allows for simple integration in cavity designs to increase this even further. We demonstrate a 117-fold enhancement, of resonant vs non-resonant wavelengths in the THG from graphene due to the integration of a graphene layer with a resonant cavity. This large enhancement occurs as the cavity is resonant for both the fundamental field and the third harmonic. We model this effect using the finite difference time domain approach. By compa ring our model with experiment, we are able to deduce the value of a bulk third order susceptibility of graphene of |χ(3)|=4×10-17(m/V)2.
Physics and Astronomy
Faculty of Environment, Science and Economy
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