Optical Limiting and Theoretical Modelling of Layered Transition Metal Dichalcogenide Nanosheets

被引：286

作者：

Dong, Ningning ^{[1
]}

Li, Yuanxin ^{[1
]}

Feng, Yanyan ^{[1
]}

Zhang, Saifeng ^{[1
]}

Zhang, Xiaoyan ^{[1
]}

Chang, Chunxia ^{[1
]}

Fan, Jintai ^{[1
]}

Zhang, Long ^{[1
]}

Wang, Jun ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Mat High Power Laser, Shanghai 201800, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

SATURABLE ABSORPTION; MONOLAYER MOS2; FIBER LASER; GRAPHENE; EXFOLIATION; PHOTOLUMINESCENCE; WS2;

D O I：

10.1038/srep14646

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Nonlinear optical property of transition metal dichalcogenide (TMDC) nanosheet dispersions, including MoS2, MoSe2, WS2, and WSe2, was performed by using Z-scan technique with ns pulsed laser at 1064 nm and 532 nm. The results demonstrate that the TMDC dispersions exhibit significant optical limiting response at 1064 nm due to nonlinear scattering, in contrast to the combined effect of both saturable absorption and nonlinear scattering at 532 nm. Selenium compounds show better optical limiting performance than that of the sulfides in the near infrared. A liquid dispersion system based theoretical modelling is proposed to estimate the number density of the nanosheet dispersions, the relationship between incident laser fluence and the size of the laser generated microbubbles, and hence the Mie scattering-induced broadband optical limiting behavior in the TMDC dispersions.

引用

页数：10

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