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Optical Engineering

Pulsed erbium-doped fiber laser by a few-layer molybdenum disulfide saturable absorber: from Q-switching to mode-locking
Author(s): Zhi-Chao Luo; Fu-Zao Wang; Hao Liu; Meng Liu; Rui Tang; Ai-Ping Luo; Wen-Cheng Xu
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Paper Abstract

We demonstrated a pulsed erbium-doped fiber laser (EDFL) based on a few-layer molybdenum disulfide saturable absorber (MoS2-SA). The MoS2-SA was fabricated into a film structure by evaporating the mixture of MoS2 nanosheets and polyvinyl alcohol. The Raman spectra and nonlinear optical characteristics were measured to confirm the quality of the as-prepared MoS2-SA. By inserting the MoS2-SA into an EDFL, the pulsed operation from the stable Q-switched to mode-locking regime could be achieved by simply increasing the pump power level. The Q-switched pulse duration and repetition rate could vary from 5.18 to 3.53  μs and from 72.74 to 86.39 kHz, respectively. The maximum pulse energy was 74.93 nJ. After the achievement of Q-switched operation, the ultrashort mode-locking pulse was obtained by further increasing the pump power. The results further demonstrate the excellent saturable absorption ability of the few-layer MoS2 at telecommunication waveband.

Paper Details

Date Published: 5 February 2016
PDF: 5 pages
Opt. Eng. 55(8) 081308 doi: 10.1117/1.OE.55.8.081308
Published in: Optical Engineering Volume 55, Issue 8
Show Author Affiliations
Zhi-Chao Luo, South China Normal Univ. (China)
Fu-Zao Wang, South China Normal Univ. (China)
Hao Liu, South China Normal Univ. (China)
Meng Liu, South China Normal Univ. (China)
Rui Tang, South China Normal Univ. (China)
Ai-Ping Luo, South China Normal Univ. (China)
Wen-Cheng Xu, South China Normal Univ. (China)


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