Chinese Optics Letters, 2011, 9 (3): 031402, Published Online: Mar. 4, 2011
All-fiber, high power single-frequency linearly polarized ytterbium-doped fiber amplifier 
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单频 主震荡功率放大器 线偏振光 消光比 140.3510 Lasers, fiber 060.2320 Fiber optics amplifiers and oscillators 140.3480 Lasers, diode-pumped 140.3615 Lasers, ytterbium
Abstract
We report an all-fiber high power, single frequency large-mode area (LMA) linearly polarized ytterbiumdoped fiber amplifiers (YDFA) module, which is based on the master oscillator multi-stage power amplifiers (MOPA). The maximum output power is 43.8 W at a wavelength of 1064 nm when 60-W launched pump light is coupled, with high slope efficiency of 88%, polarization extinction rate (PER) >17.2 dB and nearly diffraction-limited beam quality (M2<1.1).
Chi Liu, Yunfeng Qi, Yaqian Ding, Jun Zhou, Jingxing Dong, Yunrong Wei, Qihong Lou. All-fiber, high power single-frequency linearly polarized ytterbium-doped fiber amplifier[J]. Chinese Optics Letters, 2011, 9(3): 031402.
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