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Title: The physics of ultrafast saturable absorption in graphene
Authors: Xing, Guichuan
Guo, Hencheng
Zhang, Xinhai
Sum, Tze Chien
Huan, Alfred Cheng Hon
Keywords: DRNTU::Science::Physics::Optics and light
Issue Date: 2010
Source: Xing, G., Guo, H., Zhang, X., Sum, T. C., & Huan, A. C. H. (2010). The physics of ultrafast saturable absorption in graphene. Optics express, 18(5), 4564-4573.
Series/Report no.: Optics express
Abstract: The ultrafast saturable absorption in graphene is experimentally and theoretically investigated in the femtosecond (fs) time regime. This phenomenon is well-modeled with valence band depletion, conduction band filling and ultrafast intraband carrier thermalization. The latter is dominated by intraband carrier-carrier scattering with a scattering time of 8 ( ± 3) fs, which is far beyond the time resolution of other ultrafast techniques with hundred fs laser pulses. Our results strongly suggest that graphene is an excellent atomic layer saturable absorber.
ISSN: 1094-4087
DOI: 10.1364/OE.18.004564
Schools: School of Physical and Mathematical Sciences 
Rights: © 2010 OSA This paper was published in Optics Express and is made available as an electronic reprint (preprint) with permission of Optical Society of America. The paper can be found at the following official link: [DOI:]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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