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Title: Laser Q-switching with PtS2 microflakes saturable absorber
Authors: Wang, XY 
Cheng, PK 
Tang, CY 
Long, H 
Yuan, HY 
Zeng, LH 
Ma, SN 
Qarony, W 
Tsang, YH 
Issue Date: 2018
Publisher: Optical Society of America
Source: Optics express, 14 May 2018, v. 26, no. 10, p. 13055-13060 How to cite?
Journal: Optics express 
Abstract: Numerous studies have been conducted to explore the performance of two-dimensional (2D) layered nano-materials based saturable absorber (SA) for pulsed laser applications. However, fabricating materials in nanoscale requires complicated preparation processes, high energy consumption, and high expertise. Hence, the study of pulsed laser performance based on the saturable absorber prepared by layered materials with bulk-micro size have gained a great attention. Platinum disulfide (PtS2), which is newly developed group 10 2D layered materials, offers great potential for the laser photonic applications owing to its high carrier mobility, broadly tunable natural bandgap energy, and stability. In this work, the first passively Q-switched Erbium (Er) doped fiber laser is demonstrated with an operational wavelength of 1568.8 nm by using PtS2 microflakes saturable absorber, fabricated by a simple liquid exfoliation in N-Methyl-2-pyrrolidone (NMP) and then incorporated into polyvinyl alcohol (PVA) polymer thin film. A stable Q-switched laser operation is achieved by using this PtS2 -SA within a fiber laser ring cavity. The maximum average output power is obtained as 1.1 mW, corresponding to the repetition rate of 24.6 kHz. the pulse duration of 4.2 mu s, and single pulse energy of 45.6 nJ. These results open up new applications of this novel PtS2 layered material.
EISSN: 1094-4087
DOI: 10.1364/OE.26.013055
Rights: © 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (
© 2018 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.
The following publication Xinyu Wang, Ping Kwong Cheng, Chun Yin Tang, Hui Long, Huiyu Yuan, Longhui Zeng, Sainan Ma, Wayesh Qarony, and Yuen Hong Tsang, "Laser Q-switching with PtS2 microflakes saturable absorber," Opt. Express 26, 13055-13060 (2018) is available at
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