Monolithic design of a linearly polarized single-mode Tm-doped fiber laser at 1908 nm with 207 W output
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摘要
We report a high-power,all-fiber Tm-doped laser system operating at 1908 nm,based on a master-oscillator power...展开更多
We report a high-power,all-fiber Tm-doped laser system operating at 1908 nm,based on a master-oscillator power amplifier(MOPA)configuration.The oscillator utilizes two polarization-maintaining(PM)fiber Bragg gratings(FBGs)with orthogonal principal axes to achieve single-polarization output.The system generates a linearly polarized output power of 12.6 W,with a slope efficiency of 40.6%.The power is subsequently scaled to 207.6 W through a primary amplifier,which uses a large mode area(LMA)fiber while maintaining single-mode operation.The amplifier achieves a beam quality factor(M2 )of 1.36 and a polarization extinction ratio(PER)exceeding 18.3 d B.收起
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