Large nonlinear optical absorption response in monolayer graphene and graphene oxide

被引：4
|
作者：
Fan, Yang [1 ]
Jiang, Zhiguo [1 ]
Yao, Lufeng [1 ]
机构：
[1] Naval Univ Engn, Coll Sci, Wuhan 430033, Peoples R China
来源：
MACHINERY, MATERIALS SCIENCE AND ENGINEERING APPLICATIONS | 2012年 / 510卷
关键词：
nonlinear absorption; graphene; Z-scan;
D O I：
10.4028/www.scientific.net/AMR.510.768
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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/cm(2). The values of nonlinear absorption coefficient also have been determined from the experimental data. The NLA coefficient beta of the monolayer graphene suspension is 1.96x10(-2)cm/GW,while the NLA coeffiecient beta of graphene oxide is -6.84x10(-3)cm/GW.
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页码：768 / +
页数：2
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