All-fiber chirped pulse amplification systems
First Claim
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1. A fiber chirped pulse amplification system, comprising;
- a source of optical pulses;
a pulse stretcher connected to said source for receiving said pulses and generating temporally stretched pulses;
a fiber amplifier connected to said pulse stretcher for receiving said temporally stretched pulses from said pulse stretcher and amplifying said pulses;
a pulse compressor connected to said fiber amplifier for receiving said amplified pulses and temporally compressing said amplified pulses;
wherein, said pulse stretcher and said pulse compressor are selected to have at least non-compensated values of third-order dispersion;
said fiber amplifier further introducing an amount of nonlinear phase shift to a pulse as it travels through said system,said non-compensated values of third-order dispersion and nonlinear phase shift being sufficient to compensate at least partially for one another and thereby producing pulses of shortened duration and increased peak power.
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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, low noise wavelength tunable seed source via anti-Stokes frequency shifting can be obtained.
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Citations
9 Claims
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1. A fiber chirped pulse amplification system, comprising;
a source of optical pulses; a pulse stretcher connected to said source for receiving said pulses and generating temporally stretched pulses; a fiber amplifier connected to said pulse stretcher for receiving said temporally stretched pulses from said pulse stretcher and amplifying said pulses; a pulse compressor connected to said fiber amplifier for receiving said amplified pulses and temporally compressing said amplified pulses; wherein, said pulse stretcher and said pulse compressor are selected to have at least non-compensated values of third-order dispersion; said fiber amplifier further introducing an amount of nonlinear phase shift to a pulse as it travels through said system, said non-compensated values of third-order dispersion and nonlinear phase shift being sufficient to compensate at least partially for one another and thereby producing pulses of shortened duration and increased peak power.
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2. A chirped pulse amplification system, comprising;
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a source of optical pulses; a pulse stretcher connected to said source for receiving said pulses and generating temporally stretched pulses; a fiber amplifier connected to said pulse stretcher for receiving said temporally stretched pulses from said pulse stretcher and amplifying said pulses; a pulse compressor connected to said fiber amplifier for receiving said amplified pulses and temporally compressing said amplified pulses, said system being configured such that an amplified pulse exhibits substantial non-linear phase delay which is generated within said fiber amplifier, said system having one or more sources of dispersion, and wherein said non-linear phase delay and said dispersion at least partially compensate each other such that a temporally compressed output pulse of improved pulse quality is produced. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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Specification