Measuring the nonlinear refractive index of graphene using the optical Kerr effect method
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Peer-reviewed
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Abstract
© 2016 Optical Society of America.By means of the ultrafast optical Kerr effect method coupled to optical heterodyne detection (OHD-OKE), we characterize the third-order nonlinear response of graphene and compare it to experimental values obtained by the Z-scan method on the same samples. From these measurements, we estimate a negative nonlinear refractive index for monolayer graphene, n2 = -1.1 × 10-13 m2/W. This is in contradiction to previously reported values, which leads us to compare our experimental measurements obtained by the OHD-OKE and the Z-scan method with theoretical and experimental values found in the literature and to discuss the discrepancies, taking into account parameters such as doping.
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1007 Nanotechnology
Journal Title
Optics Letters
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0146-9592
1539-4794
1539-4794
Volume Title
41
Publisher
The Optical Society
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European Commission (604391)