We demonstrated a compact broad spectrum ultrashort fiber laser system that employed a similariton laser as a seed and fiber-optic nonlinearities in an erbium-doped fiber amplifier to broaden the optical spectrum. The system generated a stable 59 fs ultrashort pulse with a spectral bandwidth beyond 550nm (i.e. 1490–2030nm). The mode-locked oscillator produced an 85.9 fs similariton pulse at the wavelength of 1553nm. The maximum average output power of the laser system was 251mW. This new type of standard single-mode fiber-format energetic ultrashort system was suitable as a source for biological tissue imaging, broad-band spectroscopy, and optical frequency combs.

我们展示了一种紧凑的广谱超短光纤激光系统，该系统采用类似激光作为种子和掺铒光纤放大器中的光纤非线性来拓宽光谱。该系统产生稳定的 59 fs 超短脉冲，其光谱带宽超过 550nm（即 1490-2030nm）。锁模振荡器在 1553nm 波长处产生 85.9 fs 相似脉冲。激光系统的最大平均输出功率为251mW。这种新型标准单模光纤格式高能超短系统适合作为生物组织成像、宽带光谱和光频梳的来源。