Picosecond pulse amplification in a core-pumped large-mode-area erbium fiber.
作者： J. C. Jasapara , M. J. Andrejco , A. D. Yablon , J. W. Nicholson , C. Headley
DOI: 10.1364/OL.32.002429
关键词:
摘要: Amplification in a single-clad, large-mode-area erbium fiber as an alternative to double-clad Er-Yb amplifiers is presented. Both signal and pump are coupled through mode-matched splice into the fundamental mode, which ensures preferential gain mode while minimizing amplified spontaneous emission (ASE). The 875 μm2 effective area of Er enables amplification 6 ps pulses at 1.55 μm wavelength by ~33 dB single stage >25kW peak power with low nonlinear pulse distortion diffraction-limited output beam M2<1.1.
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