Nonlinear saturable absorption of vertically stood WS2 nanoplates

被引：43
|
作者：
Fu, Xiuli [1 ,2 ]
Qian, Jingwen [1 ,2 ,3 ]
Qiao, Xiaofen [4 ]
Tan, Pingheng [4 ]
Peng, Zhijian [3 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[2] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China
[3] China Univ Geosci, Sch Engn & Technol, Beijing 100083, Peoples R China
[4] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
来源：
OPTICS LETTERS | 2014年 / 39卷 / 22期
基金：
中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;
关键词：
HYDROGEN EVOLUTION; OPTICAL PROPERTIES; LATTICE-DYNAMICS; GRAPHENE OXIDE; NANOSHEETS; OPTOELECTRONICS; DICHALCOGENIDES; MOS2;
D O I：
10.1364/OL.39.006450
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the nonlinear optical (NLO) properties of vertically stood WS2 nanoplates excited by 532-nm picosecond laser light. The nanoplates were synthesized by a no-catalyst thermal evaporation process. Raman spectroscopy and x-ray diffraction pattern indicate that the nanoplates are of high crystal quality. The nanoplates exhibit large nonlinear saturable absorption but negligible nonlinear refraction. Mechanisms of the NLO response are proposed. (C) 2014 Optical Society of America
引用
收藏
页码：6450 / 6453
页数：4
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