Sub-100 fs pulses from an all-polarization maintaining Yb-fiber oscillator with an anomalous dispersion higher-order-mode fiber.

Sub-50 fs Yb-doped laser with anomalous-dispersion photonic crystal fiber.

We report on the generation of 42 fs pulses at 1 μm in a completely fiber-integrated format, which are, to the best of our knowledge, the shortest from all-fiber-integrated Yb-doped fiber lasers to date. The ring fiber cavity incorporates anomalous-dispersion, solid-core photonic crystal fiber with low birefringence, which acts as a broadband, in-fiber Lyot filter to facilitate mode locking. Th...

Self - starting all - polarization maintaining Yb - fiber laser with a polarization maintaining anomalous dispersion higher - order - mode fiber

Generation of sub-100-fs pulses at up to 200 MHz repetition rate from a passively mode-locked Yb-doped fiber laser.

Generation of sub-100-fs pulses at repetition rates of 100-200 MHz from a passively mode-locked Yb-fiber laser via nonlinear polarization rotation is reported. The limitations to the repetition rate in terms of the pulse dynamics and the physical size of the cavity are discussed. We determine that physical size of the components dictate the maximum repetition rate and discuss the implications o...

Sub-100-fs 1.87 GHz mode-locked fiber laser using stretched-soliton effects

Current pulsed fiber lasers that are capable of delivering stable sub-100-fs pulses at megahertz repetition rates require intracavity pulse energies in the nanojoule range. Scaling these lasers to gigahertz repetition rates necessitates, therefore, very high average power levels and complex cladding-pumped configurations. Here we report a type of stretchedsoliton all-fiber laser that generates ...

High power 2 µm femtosecond fiber laser.

A high power polarization maintaining femtosecond Tm-doped fiber laser system is demonstrated. A chirped fiber Bragg grating with normal dispersion was used to compensate the anomalous dispersion from the regular fiber in the 2 µm seed oscillator to generate mode locked pulses with a pulse repetition rate of 30.84 MHz. After chirped pulse amplification, an amplified power of 78 W was obtained. ...