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2025 Volume 34 Issue 7

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Qinghua Wang(汪情华), Hao Sun(孙昊), Chenhao Lu(鲁晨浩), Huiran Yang(杨慧苒), and Lu Li(李璐). 2025: TaS2-based saturable absorbers for Q-switched fiber laser applications, Chinese Physics B, 34(7): 074209. doi: 10.1088/1674-1056/addcd7

Citation:

Qinghua Wang(汪情华), Hao Sun(孙昊), Chenhao Lu(鲁晨浩), Huiran Yang(杨慧苒), and Lu Li(李璐). 2025: TaS₂-based saturable absorbers for Q-switched fiber laser applications, Chinese Physics B, 34(7): 074209. doi: 10.1088/1674-1056/addcd7

TaS₂-based saturable absorbers for Q-switched fiber laser applications

1 School of Material Science and Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;
2 Inner Mongolia Key Laboratory of New Metal Material, Baotou 014010, China;
3 Key Laboratory of Green Extraction & Efficient Utilization of Light Rare-Earth Resources, Ministry of Education, Baotou 014010, China;
4 School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China

Received Date: 21/04/2025
Accepted Date: 07/05/2025
Fund Project:
Project supported by the National Natural Science Foundation of China (Grant No. 12075190) and the Shaanxi Fundamental Science Research Project for Mathematics and Physics (Grant No. 23JSY019).
PACS: 42.55.Wd; 42.70.Gi; 42.70.-a

Abstract

Transition metal disulfides are widely applied as nonlinear optical materials for laser pulse generation. In this paper, TaS$_{2}$ is successfully used for the first time to achieve a high-energy passively $Q$-switched erbium-doped fiber (EDF) laser. TaS$_{2}$ nanosheets are prepared by the liquid phase exfoliation method, and then the TaS$_{2}$ solution is mixed with polyvinyl alcohol (PVA). TaS$_{2}$/PVA film is prepared, which is cut into $\rm 1 mm \times 1 mm$ flakes. TaS$_{2}$/PVA saturable absorber (SA) is obtained by sandwiching a small flake between two fiber optic patch cable connectors. With the TaS$_{2}$/PVA SA added to an EDF laser, a $Q$-switched fiber laser with a center wavelength of 1560 nm and a repetition rate ranging from 51.33 kHz to 83.04 kHz is realized. At the pump power of 231 mW, the maximum output power is 1094 μW, and the shortest pulse duration is 3.48 μs. The results confirm that the TaS$_{2}$ material has excellent potential for application in nonlinear optics.
- transition metal disulfide,
- $Q$-switched,
- saturable absorber,
- fiber laser

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沈阳化工大学材料科学与工程学院沈阳 110142

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TaS₂-based saturable absorbers for Q-switched fiber laser applications

Received Date: 21/04/2025
Accepted Date: 07/05/2025

Fund Project:

Key words:

Abstract: Transition metal disulfides are widely applied as nonlinear optical materials for laser pulse generation. In this paper, TaS$_{2}$ is successfully used for the first time to achieve a high-energy passively $Q$-switched erbium-doped fiber (EDF) laser. TaS$_{2}$ nanosheets are prepared by the liquid phase exfoliation method, and then the TaS$_{2}$ solution is mixed with polyvinyl alcohol (PVA). TaS$_{2}$/PVA film is prepared, which is cut into $\rm 1 mm \times 1 mm$ flakes. TaS$_{2}$/PVA saturable absorber (SA) is obtained by sandwiching a small flake between two fiber optic patch cable connectors. With the TaS$_{2}$/PVA SA added to an EDF laser, a $Q$-switched fiber laser with a center wavelength of 1560 nm and a repetition rate ranging from 51.33 kHz to 83.04 kHz is realized. At the pump power of 231 mW, the maximum output power is 1094 μW, and the shortest pulse duration is 3.48 μs. The results confirm that the TaS$_{2}$ material has excellent potential for application in nonlinear optics.

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