Millijoule Pulse Energy High Repetition Rate Femtosecond Fiber CPA System: Results, SHG and Scaling potential

摘要

We report on an ytterbium-doped fiber CPA system delivering millijoule level pulse energy at repetition rates above 100 kHz corresponding to an average power of more than 100 W. The compressed pulses are 800 fs. At 200 kHz repetition rate the pulses were frequency-doubled to 41 W average power and 205 μJ of pulse energy in the green. To show the average power scaling potential of this particular fiber a cw laser experiment was conducted resulting in 710 W of pump-power limited output.