2μm mode-locked fiber laser based on smf-simf-gimf-smf fiber structure
A fiber laser and fiber structure technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of low damage threshold and sensitivity to environmental factors, and achieve high damage threshold, low mode-locking threshold, and simple production. Effect
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[0018] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.
[0019] figure 1 It is a structural schematic diagram of the SMF-SIMF-GIMF-SMF mode-locked fiber laser based on the present invention. As can be seen from the figure, the mode-locked fiber laser of the present invention consists of a 1570 single-mode fiber laser pump source 1, a wavelength division multiplexer 2, a single-mode thulium-doped fiber 3, a non-polarization-maintaining fiber isolator 4, a polarization controller 5, and an SMF- The SIMF-GIMF-SMF saturable absorber 6 and the coupler (fiber beam splitter) 7 are connected, and the ring cavity formed is an all-fiber structure, and all components are connected by optical fiber fusion. A pump source 1 is coupled and injected into the laser cavity through a wavelength division multiplexer 2, and a single-mode thulium-doped fiber 3 is used as a gain medium. The non-polarization-maintaining optical fi...
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