摘要
Stimulated Brillouin scattering(SBS) effect is currently the major limitation for the power scaling of singlefrequency/narrow linewidth fiber laser systems. A single-mode linearly polarized all-fiber amplifier system is set up to investigate SBS effect in triple-frequency high-power amplifiers. With this amplifier, up to 302 W output power with 83% slope efficiency is achieved and the SBS threshold is scaled up to 12 d B. To the best of our knowledge, this is the highest output power of multifrequency laser from a single-mode polarization maintaining fiber. Good spectral properties and high brightness make this laser source available for the application of second harmonic generation, coherent beam combining.
Stimulated Brillouin scattering （SBS） effect is currently the major limitation for the power scaling of single- frequency/narrow linewidth fiber laser systems. A single-mode linearly polarized all-fiber amplifier system is set up to investigate SBS effect in triple-frequency high-power amplifiers. With this amplifier, up to 302 W output power with 83% slope efficiency is achieved and the SBS threshold is scaled up to 12 dB. To the best of our knowledge, this is the highest output power of multifrequency laser from a single-mode polarization maintaining fiber. Good spectral properties and high brightness make this laser source available for the application of second harmonic generation, coherent beam combining.
基金
supported by the National Natural Science Foundation of China(Nos.1330134 and 61378024)
the National Key Research and Development Program(No.2016YFB0402201)
the Natural Science Foundation of Shanghai(Nos.16ZR1440100 and 16ZR1440200)
the Program of Shanghai Technology Research Leader(No.17XD1424800)
the Shanghai Sailing Program(No.17YF1421200)
the key technologies R&D program of Jiangsu(Nos.BE2014001 and BE2016005-4)
K.C.Wong Education Foundation
