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Facile synthesis of two-dimensional WS2 with reverse saturable absorption and nonlinear refraction properties in the PMMA matrix.

Authors :
Wei, Rongfei
Tian, Xiangling
Zhang, Hang
Hu, Zhongliang
He, Xin
Chen, Zhi
Chen, Qiuqun
Qiu, Jianrong
Source :
Journal of Alloys & Compounds. Nov2016, Vol. 684, p224-229. 6p.
Publication Year :
2016

Abstract

We report a versatile, cost-effective and reproducible solid-state reaction approach to synthesize two-dimensional (2D) WS 2 with strong nonlinear optical performances. The reverse saturable absorption and nonlinear refraction properties of 2D WS 2 incorporated into PMMA were measured by the z-scan configuration under femtosecond pulses at 800 nm. The figure of merit and the nonlinear optical refractive index n 2 were calculated to be ∼ 0.40 × 10 −13 esu cm and ∼ 3.34 × 10 −4 cm 2 /GW, respectively. Furthermore, optical limiting (OL) effects of the WS 2 /PMMA composite were observed with OL threshold F OL ∼ 2.4 mJ/cm 2 , which is lower than those of previously reported OL materials. Such results imply the WS 2 /PMMA composite as a potential candidate for practical OL applications and the solid-state reaction technology provides a feasible approach for the preparation of 2D WS 2 applied in the field of nanophotonics. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
09258388
Volume :
684
Database :
Academic Search Index
Journal :
Journal of Alloys & Compounds
Publication Type :
Academic Journal
Accession number :
116735904
Full Text :
https://doi.org/10.1016/j.jallcom.2016.05.169