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Mode-locked pulse generation from an all-FMF ring laser cavity

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摘要

Experimental generation of stable mode-locked pulses and cylindrical vector beams (CVBs), from an all few-mode fiber (FMF) ring laser is firstly reported, to the best of our knowledge. In this laser, a section of few-mode erbium-doped fiber (FM-EDF) is used as the gain medium. The FM-EDF is pumped by 976 nm laser light with LP11 mode, which is simultaneously converted and multiplexed through a homemade hybrid device, i.e. wavelength division multiplexing-mode selection coupler (WDM-MSC). All the components in our experiment are connected using FMF. The resulted CVB pulses have a spectral width of 0.33 nm with a repetition rate of 30.58 MHz under the pump power of 340 mW. Moreover, both azimuthally and radially polarized CVBs have been achieved with high purity of >95%. This mode-locked CVB fiber laser with all FMF configuration open the way to manipulate the transverse mode in mode-locked fiber lasers.

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作者单位:

    Nanjing University of Posts and Telecommunications
    Nanjing University of Posts and Telecommunications
    Nanjing University of Posts and Telecommunications
    Nanjing University of Posts and Telecommunications
    Nanjing University of Posts and Telecommunications

引用该论文

Chen Su,Hu Weixiang,Xu Yang,Cai Yu,Wang Zhiqiang,Zhang Zuxing. Mode-locked pulse generation from an all-FMF ring laser cavity[J].Chinese Optics Letters,2019,17(12):12.