期刊
JOURNAL OF LUMINESCENCE
卷 252, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2022.119335
关键词
Tellurium nanowire; Saturable absorber; Mode-locked fiber laser; Femtosecond laser
类别
资金
- Guangdong Province Key -Area Research and Development Program [2020B090922001]
- Guangzhou Municipal Science and Technology Bureau, China [202002030027]
- Pearl River Talent Recruitment Program of Guangdong Province, China [2017GC010278]
- Guangdong Provincial Key Laboratory of Information Photonics Technology [2020B121201011]
- Open Fund of the Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques (South China University of Technology)
In this study, a femtosecond fiber laser was realized using tellurium nanowires as the saturable absorber, opening up new research directions for the application of low-dimensional tellurium in ultrafast photonics.
As a kind of semiconductors, tellurium has attracted much attention due to its superior optical, electrical, and thermoelectric properties. In particular, a lot of research on low-dimensional tellurium has been performed in recent years, but with relatively few work on its applications in ultrafast photonics. In this work, a femtosecond fiber laser was realized using the prepared tellurium nanowires as the saturable absorber. Tellurium nanowires were synthesized by the hydrothermal method and then deposited on the tapered optical fiber to form the tellurium saturable absorber (Te-SA). The saturable absorption property of Te-SA was tested by the two-arm balance detection method, the saturation intensity and modulation depth were determined to be 8.9 MW/cm2 and 27.0%, respectively. Then, Te-SA was applied in the erbium-doped fiber laser and a stable mode-locked fiber laser with a pulse width of 621 fs was achieved. The results indicate the great potential application of tellurium nanowires in ultrafast photonics.
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