Pulsed erbium-doped fiber laser by a few-layer molybdenum disulfide saturable absorber: from Q-switching to mode-locking

Zhi-Chao Luo; Fu-Zao Wang; Hao Liu; Meng Liu; Rui Tang; Ai-Ping Luo; Wen-Cheng Xu

doi:10.1117/1.OE.55.8.081308

5 February 2016 Pulsed erbium-doped fiber laser by a few-layer molybdenum disulfide saturable absorber: from Q-switching to mode-locking

Zhi-Chao Luo, Fu-Zao Wang, Hao Liu, Meng Liu, Rui Tang, Ai-Ping Luo, Wen-Cheng Xu

Author Affiliations +

Optical Engineering, Vol. 55, Issue 8, 081308 (February 2016). https://doi.org/10.1117/1.OE.55.8.081308

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.

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Zhi-Chao Luo, Fu-Zao Wang, Hao Liu, Meng Liu, Rui Tang, Ai-Ping Luo, and Wen-Cheng Xu "Pulsed erbium-doped fiber laser by a few-layer molybdenum disulfide saturable absorber: from Q-switching to mode-locking," Optical Engineering 55(8), 081308 (5 February 2016). https://doi.org/10.1117/1.OE.55.8.081308

Published: 5 February 2016

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