摘要
Stable picosecond dissipative soliton pulses were observed in an ytterbium-doped fber laser employing a high-quality mixture of BP/SnSe_(2)-PVA saturable absorber(SA).The modulation depth,saturation intensity,and non-saturable loss of the mixture of BP/SnSe_(2)-PVA SA were measured with values of 5.98%,18.37 MW/cm2,and 33%,respectively.Within the pump power range of 150–270 mW,stable dissipative soliton pulses were obtained with an output power of 1.68–4 mW.When the minimum pulse duration is 1.28 ps,a repetition rate of 0.903 MHz,center wavelength of 1064.38 nm and 3 dB bandwidth of 2 nm were obtained.The maximum pulse energy of 4.43 nJ and the signal-to-noise ratio up to 72 dB were achieved at pump power of 270 mW.The results suggest that the BP/SnSe_(2)-PVA mixture SA has outstanding nonlinear saturable absorption characteristics and broad ultrafast laser applications.
基金
the National Natural Science Foundation of China(Grant No.62005094)
the Natural Science Foundation of Shandong Province(No.ZR2021MF128)
the Key Research Program of Shandong Province(No.2020JMRH0302)
the Industrial Chain Program of Shandong Laser Equipment Innovation and Entrepreneurship Community(No.JGCYL2022-5)
the Research Fund of University of Jinan(No.XKY1739).
