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Title: β-In₂S₃ nanoplates for ultrafast photonics
Authors: Li, Xiaohui
Han, Yueheng
Shi, Zhaojiang
An, Mingqi
Chen, Enci
Feng, Jiangjiang
Wang, Qi Jie
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2022
Source: Li, X., Han, Y., Shi, Z., An, M., Chen, E., Feng, J. & Wang, Q. J. (2022). β-In₂S₃ nanoplates for ultrafast photonics. ACS Applied Nano Materials, 5(3), 3229-3236.
Journal: ACS Applied Nano Materials
Abstract: The technological revolution of two-dimensional (2D) materials provides vitality for ultrafast optics. Compared with other 2D materials, indium sulfide (In2S3) has become an attractive candidate material in the field of nonlinear optics because of its high carrier mobility, ultrafast photoelectric sensitivity, medium band gap, and high absorption coefficient. However, its nonlinear optical effects have rarely been studied. In this work, we synthesized 2D β-In2S3nanoplates using the hydrothermal method. The saturable absorber based on β-In2S3nanoplates has been investigated. The experimental results demonstrated that the modulation depth and saturable intensity of β-In2S3are measured as 2.32% and 18.4 MW·cm-2, respectively, which indicates that β-In2S3has great potential in ultrafast optics among emerging nonlinear optical materials. Using such unprecedented properties, the mode-locked fiber laser with 247th (1.92 GHz) harmonic mode locking is realized in the C-band for the first time to our knowledge. This paves the way for exploring β-In2S3as an outstanding nonlinear material for high-performance ultrafast optics.
ISSN: 2574-0970
DOI: 10.1021/acsanm.1c03542
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
Research Centres: Centre for OptoElectronics and Biophotonics
The Photonics Institute 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Nano Materials, copyright © 2022 American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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