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Large Nonlinear Optical Absorption Response in Monolayer Graphene and Graphene Oxide

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Abstract:

Nonlinear absorption of monolayer graphene and graphene oxide suspensions were studied in the wavelength of 800 nm by Z-scan method with 50fs pulses. Large reverse saturable absorption is observed in graphene, while graphene oxide shows saturable absorption at the incident intensity of 46 GW/cm2. The values of nonlinear absorption coefficient also have been determined from the experimental data. The NLA coefficient β of the monolayer graphene suspension is 1.96×10-2cm/GW,while the NLA coeffiecient β of graphene oxide is-6.84×10-3cm/GW.

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Periodical:

Advanced Materials Research (Volume 510)

Pages:

768-771

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.510.768

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Online since:

April 2012

Authors:

Yang Fan, Zhi Guo Jiang, Lu Feng Yao

Keywords:

Graphen, Nonlinear Absorption, Z-Scan

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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