Wavelength and pulse width tunable 1 μm Yb-doped programmable fiber laser

Due to their features of high output power and broad wavelength band, Ytterbium-doped (Yb) fiber lasers have been investigated and developed for wide applications in the industrial, chemical, and biomedical markets [1]. Femtoseconds and picoseconds Mode-locked Yb fiber lasers have cast lots of attention and interests for various nonlinear spectroscopic and imaging systems [1-3]. Tunability of wavelength and pulse width is an especially key element when it comes to assess different absorption spectra with different concentrations.