Journal
APPLIED PHYSICS LETTERS
Volume 112, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4999054
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Funding
- European Commission [FP7-ICT-2013-613024-GRASP]
- EPSRC fellowship [EP/K041215/1]
- Future Photonics Manufacturing Hub [EPSRC EP/N00762X/1]
- EPSRC [EP/N00762X/1, EP/K041215/1, EP/G041482/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/N00762X/1, EP/K041215/1, EP/G041482/1] Funding Source: researchfish
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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 comparing our model with experiment, we are able to deduce the value of a bulk third order susceptibility of graphene of vertical bar chi((3))vertical bar = 4 x 10(-17) (m/V)(2) . (C) 2018 Author(s).
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