Please use this identifier to cite or link to this item:
|Title:||Z-scan measurement of the nonlinear refractive index of graphene|
Kian Ping, L.
|Citation:||Zhang, H., Virally, S., Bao, Q., Kian Ping, L., Massar, S., Godbout, N., Kockaert, P. (2012-06-01). Z-scan measurement of the nonlinear refractive index of graphene. Optics Letters 37 (11) : 1856-1858. ScholarBank@NUS Repository. https://doi.org/10.1364/OL.37.001856|
|Abstract:||Under strong laser illumination, few-layer graphene exhibits both a transmittance increase due to saturable absorption and a nonlinear phase shift. Here, we unambiguously distinguish these two nonlinear optical effects and identify both real and imaginary parts of the complex nonlinear refractive index of graphene. We show that graphene possesses a giant nonlinear refractive index n2 ≃ 10-7 cm2 W-1, almost 9 orders of magnitude larger than bulk dielectrics. We find that the nonlinear refractive index decreases with increasing excitation flux but slower than the absorption. This suggests that graphene may be a very promising nonlinear medium, paving the way for graphene-based nonlinear photonics. © 2012 Optical Society of America.|
|Source Title:||Optics Letters|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jun 15, 2018
WEB OF SCIENCETM
checked on May 23, 2018
checked on Jun 8, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.