0000000000900578
AUTHOR
K.g Wilcox
High-power picosecond and femtosecond source based on Yb-doped fiber amplification of VECSELs
International audience; Picosecond pulses at gigahertz repetition rates from two different passively mode-locked VECSELs are amplified to high powers in cascaded ytterbium doped fiber amplifiers. Small differences in pulse durations between the two VECSELs led to amplification in different nonlinear regimes. The shorter 0.5 ps pulses could be amplified to 53 W of average power in the parabolic pulse regime. This was confirmed by excellent pulse compression down to 110 fs. The VECSEL producing longer 4.6 ps pulses was amplified in an SPM dominated regime up to 200 W of average power but with poor recompressed pulse quality.
Gigahertz parabolic pulse generation in a high-power polarization-maintaining fiber amplifier seeded by a passively mode-locked VECSEL
Fiber amplification of sub-picosecond pulses at 1.1 GHz produced by a passively mode-locked VECSEL enabled the generation of parabolic pulses with average power exceeding 50 W. Clean pulse compression down to 110 fs was demonstrated.