摘要
Experimental generation of stable mode-locked pulses and cylindrical vector beams(CVBs),from an all fewmode fiber(FMF)ring laser is first 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 976nm laser 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 m W.Moreover,both azimuthally and radially polarized CVBs were achieved with a high purity of>95%.This mode-locked CVB fiber laser with an all FMF configuration opens the way to manipulate the transverse mode in mode-locked fiber lasers.
Experimental generation of stable mode-locked pulses and cylindrical vector beams(CVBs), from an all fewmode fiber(FMF) ring laser is first 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 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 m W. Moreover, both azimuthally and radially polarized CVBs were achieved with a high purity of >95%. This mode-locked CVB fiber laser with an all FMF configuration opens the way to manipulate the transverse mode in mode-locked fiber lasers.
作者
陈苏
胡伟翔
徐杨
蔡宇
王治强
张祖兴
Su Chen;Weixiang Hu;Yang Xu;Yu Cai;Zhiqiang Wang;Zuxing Zhang(Advanced Photonic Technology Laboratory,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)
基金
supported by the Natural Science Foundation of Jiangsu Province(Nos.BK20161521 and BK20180742)
Six Talent Peaks Project in Jiangsu Province(No.2015-XCL-023 P)
Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX18_0856)
Talents Projects in Nanjing University of Posts and Telecommunications(Nos.NY214002 and NY215002)
