Single frequency laser with wavelength band of 1.6[mu]m, high beam quality and high power
A single-frequency laser, high-power technology, applied in the coupling of optical waveguides, the structure/shape of the active medium, etc., can solve the problems of lasers that do not have single-frequency, high beam quality and other output characteristics, poor beam quality, and restricted lasers. , to achieve the effect of not easy fluorescence quenching effect, large size and good beam quality
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[0021] figure 1 It is a schematic diagram of the structure of a 1.6μm high-beam quality high-power single-frequency laser based on an all-glass phosphate fiber. Such as figure 1 As shown, the 1.6 μm single-frequency laser seed source 1 and the pump source 2 are respectively connected to the signal input port and the pump port of the fiber combiner 3, and the highly doped all-glass double-clad phosphate fiber 4 is used as the laser gain medium. One end of it is softened and thinned into a tapered shape at high temperature, and then fused and coupled with the output port of the fiber combiner 3, while the other end of the highly doped all-glass double-clad phosphate fiber 4 is also tapered at high temperature, and then connected to the optical fiber The input terminal of the isolator 5 is connected. The output end of the optical isolator 5 is used as a laser output port.
[0022] The end face structure of the highly doped all-glass double-clad phosphate optical fiber 4 used i...
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