High-power, high repetition rate picosecond and femtosecond sources based on Yb-doped fiber amplification of VECSELs

Pascal Dupriez, Christophe Finot, Andy Malinowski, Jayanta K. Sahu, Johan Nilsson, David J. Richardson, Keith G. Wilcox, Hannah D. Foreman, Anne C. Tropper
2006 Optics Express  
High-power, high repetition rate picosecond and femtosecond sources based on Ybdoped fiber amplification of VECSELs Dupriez, P.; Finot, C.; Malinowski, A.; Sahu, J. K.; Nilsson, J.; Richardson, D. J. ). Highpower, high repetition rate picosecond and femtosecond sources based on Yb-doped fiber amplification of VECSELs. Optics Express, 14(21), 9611-9616. https://doi.Abstract: Picosecond pulses at gigahertz repetition rates from two different passively mode-locked VECSELs are amplified to high
more » ... plified 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. SPM-dominated regime of amplification We first construct a MOPA operating in a SPM-dominated regime of amplification. The advantage of this regime is that it places relatively few constraints on the fiber and pulse parameters, allowing these, for example, to be selected for the highest average output power. The ML-VECSEL chosen for this experiment produced 4.6-ps pulses at 910 MHz and with 8 mW of average power. The wavelength was 1055 nm and the linewidth 0.45 nm, corresponding to a time-bandwidth product (ΔτΔν) of ~ 0.56. The pulses were amplified to #72743 -$15.00 USD
doi:10.1364/oe.14.009611 pmid:19529351 fatcat:tw7n7h3ipjgnja6p4pdkfss6di