Modular, high energy, widely-tunable ultrafast fiber source
First Claim
1. A laser system comprising:
- a source of seed pulses;
a fiber amplifier which inputs and amplifies said seed pulses, and outputs amplified pulses;
wherein said seed pulses are generated and said fiber amplifier is configured such that the temporal form of the pulses produced by said fiber amplifier are parabolic.
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Abstract
A modular, compact and widely tunable laser system for the efficient generation of high peak and high average power ultrashort pulses. Modularity is ensured by the implementation of interchangeable amplifier components. System compactness is ensured by employing efficient fiber amplifiers, directly or indirectly pumped by diode lasers. Peak power handling capability of the fiber amplifiers is expanded by using optimized pulse shapes, as well as dispersively broadened pulses. After amplification, the dispersively stretched pulses can be re-compressed to nearly their bandwidth limit by the implementation of another set of dispersive delay lines. To ensure a wide tunability of the whole system, Raman-shifting of the compact sources of the ultrashort pulses in conjunction with frequency-conversion in nonlinear optical crystals can be implemented, or an Anti-Stokes fiber in conjunction with fiber amplifiers and Raman-shifters are used.
328 Citations
30 Claims
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1. A laser system comprising:
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a source of seed pulses;
a fiber amplifier which inputs and amplifies said seed pulses, and outputs amplified pulses;
whereinsaid seed pulses are generated and said fiber amplifier is configured such that the temporal form of the pulses produced by said fiber amplifier are parabolic.
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2. A laser system comprising:
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a source of seed pulses;
a fiber amplifier which inputs and amplifies said seed pulses, and outputs amplified pulses;
whereinthe seed source produces pulses which induce the formation of pulses within said fiber amplifier having a parabolic temporal form.
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3. A laser system comprising:
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a seed source generating pulses in the 1-1.15 μ
m wavelength region which have a spectral bandwidth larger than 0.3 nm and a pulse width between approximately 50 fs and 1 ns;
a fiber amplifier for broad bandwidth pulses which inputs and amplifies said pulses, and outputs amplified pulses; and
a pump laser for providing laser energy to said fiber amplifier;
wherein said seed source comprises a fiber laser, a Raman-shifter operable to shift the emission wavelength of the fiber laser to a spectral range longer than 2000 nm, and a nonlinear crystal operable to shift the wavelength of an output of the Raman-shifter to a spectral range from 1000 nm to 1500 nm. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification