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Dual-wavelength soliton mode-locked fiber laser with a WS2-based fiber taper

guobo94656329 添加于 2017/12/3 17:57:09  28次阅读 | 0次推荐 | 0个评论

Recently, few-layerWS2, as a novel two-dimensional (2D) material, has been discovered to possess both the saturable absorption effect and the huge nonlinear refractive index. In experiment, by taking advantage of the unique optical properties of 2D WS2, we fabricated a highly nonlinear photonic device using the pulsed laser beam to deposit the WS2 film onto a fiber taper. With the WS2-based fiber taper, we have demonstrated the single- and dual-wavelength soliton pulses in the erbium-doped fiber laser (EDFL) by properly adjusting the pump strength and the polarization state. According to the soliton theory, the pulse width is ~220 fs for the single-wavelength soliton, and ~585 and ~605 fs for the dual-wavelength soliton, respectively. The dual-wavelength soliton fiber laser exhibits the maximum output power of 10.1 mW and the pulse energy of ~1.14 nJ, when the pump power is increased to ~420 mW. Our findings suggest that WS2-based fiber taper could operate as both an excellent saturable absorber for obtaining a femtosecond pulse and a promising highly nonlinear photonic material for the multi-wavelength generation.

作 者:B. Guo, Y. Yao, P. Yan, K. Xu, J. Liu, S. Wang, and Y. Li
期刊名称: IEEE Photon. Technol. Lett.
期卷页: FEBRUARY 1, 2016 第28卷 第3期 323-326页
学科领域:信息科学 » 光学和光电子学 » 光子与光电子器件
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关键词: Mode-locked lasers, nonlinear optics, fibers, nonlinear optical materials, WS2
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