All-fiber chirped pulse amplification systems

摘要

By compensating polarization mode-dispersion as well chromatic dispersion in photonic crystal fiber pulse compressors, high pulse energies can be obtained from all-fiber chirped pulse amplification systems. By inducing third-order dispersion in fiber amplifiers via self-phase modulation, the third-order chromatic dispersion from bulk grating pulse compressors can be compensated and the pulse quality of hybrid fiber/bulk chirped pulse amplification systems can be improved. Finally, by amplifying positively chirped pulses in negative dispersion fiber amplifiers, a low noise wavelength tunable seed source via anti-Stokes frequency shifting can be obtained.

主权项

1. A fiber chirped pulse amplification system, comprising;
a seed source generating optical pulses; a pulse stretcher for temporally stretching pulses from said seed source thereby generating chirped optical pulses; a non-linear amplifier disposed downstream from said pulse stretcher and arranged to receive and amplify chirped optical pulses, said non-linear amplifier configured to generate substantial self-phase modulation and corresponding non-linear phase delay of pulses propagating therein, wherein a spectrum at the output of said non-linear amplifier is characterized by having increased amplitude modulation with an increase in pulse energy; and a pulse compressor disposed downstream from said non-linear amplifier and arranged to receive amplified chirped pulses and to temporally compress said amplified chirped pulses, wherein said stretched pulses amplified in said amplifier are subjected to said substantial level of self-phase modulation, and said substantial level of self-phase modulation provides a level of third-order dispersion that at least partially compensates for the level of third-order dispersion from said pulse stretcher and said pulse compressor.