A graphene-based mid-infrared dual-wavelength co-repetitive pulsed fiber laser
A fiber laser and repeated frequency pulse technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of difficulty in realizing mid-infrared dual-wavelength laser pulses, loss of compactness and flexibility of fiber lasers, and inability to meet actual needs, etc. Achieve the effect of low loss, ingenious design, and close cooperation with each other
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Embodiment 1
[0033] Such as figure 1 As shown, a graphene-based mid-infrared dual-wavelength pulsed fiber laser with the same repetition frequency includes a reflector 13 covered with a graphene film layer 12. From a top view angle: the reflector 13 is provided with a dichroic mirror at the same level One 10, the dichroic mirror one 10 is arranged at an inclination of 45° relative to the horizontal direction, a relatively parallel dichroic mirror two 14 is arranged directly above the dichroic mirror one 10, and a pulse output terminal 15 is arranged above the dichroic mirror two 14; Plano-convex mirror 4 11 is arranged between mirror 10 and reflector 1), plano-convex mirror 4 11 can focus the light beam to reflector 13; There are 2 μm light generation routes, 3 μm light generation routes and 2 μm light generation routes parallel. The dichroic mirror two 14 is positioned at the top of the dichroic mirror one 10, and the center point of the dichroic mirror two 14 and the center point of the...
Embodiment 2
[0039] Such as figure 1 with figure 2 As shown, the pump source 2 5 is turned on, and the 1150nm light emitted by the pump source 2 5 is focused to the coating layer 7 of the input end of the holmium-spectrum co-doped ZBLAN fiber 8 through the plano-convex mirror 1 6 to generate 3 μm light from the holmium-spectrum The output end of the co-doped ZBLAN fiber 8 is output, and the 3 μm light passes through the plano-convex mirror 3 9 and propagates to the dichroic mirror 1 10. Convex mirror four 11 is focused and transmitted to the mirror 13 covered with graphene film layer 12; 3 μm light is reflected by the mirror 13 and propagates back and forth in the second resonant cavity, and the number density of reversed particles of the upper energy level accumulates in large quantities; adjust the pump The power of Puyuan 2 5 makes the 3 μm optical power output from the holmium-spectrum co-doped ZBLAN fiber 8 low, so that the graphene cannot reach the saturation state, and the graphen...
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