期刊
OPTICAL FIBER TECHNOLOGY
卷 74, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.yofte.2022.103092
关键词
Modelocked fiber laser; Nonlinear multimode interference; Saturable absorber
We present a reflection mode saturable absorber based on nonlinear multimode interference in a graded index multimode fiber. The saturable absorber provides a modulation depth of 12 % at a low saturation intensity of 18.5 MW/cm2. The all-fiber structure and reflection mode design of this saturable absorber makes it an ideal device for the fabrication of fiber lasers with linear resonant cavity. When inserted in a linear laser cavity comprising a thulium doped fiber as the gain medium, the saturable absorber triggers stable modelocked pulses with a center wavelength of 1905 nm and spectral width of 11.2 nm.
We present a reflection mode saturable absorber based on nonlinear multimode interference in a graded index multimode fiber. The saturable absorber provides a modulation depth of 12 % at a low saturation intensity of 18.5 MW/cm2. The all-fiber structure and reflection mode design of this saturable absorber makes it an ideal device for the fabrication of fiber lasers with linear resonant cavity. When inserted in a linear laser cavity comprising a thulium doped fiber as the gain medium, the saturable absorber triggers stable modelocked pulses with a center wavelength of 1905 nm and spectral width of 11.2 nm.
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