All-fiber chirped pulse amplification systems
First Claim
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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.
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Abstract
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.
30 Citations
19 Claims
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1. A fiber chirped pulse amplification system, comprising;
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 19)
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11. A fiber chirped pulse amplification system, comprising;
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a seed source; a pulse stretcher for temporally stretching pulses from said seed source; a non-linear amplifier configured as a cubicon pulse amplifier; and a pulse compressor, wherein the pulses amplified in said non-linear amplifier are subjected to a substantial level of self-phase modulation, and such that there is an observable increase in amplitude modulation of an output spectrum of said pulses as compared to an input spectrum thereof, said amplitude modulation characterized by at least an increase in spectral amplitude ripple with an increase in pulse energy, wherein pulse quality at an output of said pulse compressor is improved with an increase in pulse energy, notwithstanding said increase in amplitude modulation and ripple in said spectrum. - View Dependent Claims (12)
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Specification