Yao Weichao, Shao Zhenhua, Shen Chongfeng, Tang Jinwen, Zhao Yongguang, Shen Deyuan
Opt Express. 2019 Jan 21;27(2):1276-1282. doi: 10.1364/OE.27.001276.
We report on a high-power picosecond all-fiber Tm-doped fiber amplifier (TDFA) seeded by a gain-switched laser diode (LD) in the 2 µm spectral range. A total average output power of 409 W (304 ps) has been generated at 320 MHz of repetition rate with 10 dB bandwidth of ~48 nm centered at 1970 nm. Over 140 W of spectrally flat supercontinuum (SC) output has been produced at 40 MHz of repetition rate with optimized fiber length. The 10 dB spectral bandwidth was 615 nm, ranging from 1965 to 2580 nm. The prospects for further power scaling of LD seeded ~2 µm picosecond all-fiber sources are discussed.
我们报道了一种由增益开关激光二极管（LD）在2 µm光谱范围内泵浦的高功率皮秒全光纤掺铥光纤放大器（TDFA）。在重复频率为320 MHz时，产生了总平均输出功率为409 W（304 ps），中心波长为1970 nm，10 dB带宽约为48 nm的输出。通过优化光纤长度，在重复频率为40 MHz时产生了超过140 W的光谱平坦超连续谱（SC）输出。10 dB光谱带宽为615 nm，范围从1965到2580 nm。讨论了LD泵浦的~2 µm皮秒全光纤光源进一步功率扩展的前景。
