Reduction of pulse width by spectral broadening in amplification stage and after amplification stage
AssigneePolarOnyx, Inc.
InventorJian Liu
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Abstract
This invention discloses a fiber Chirped Pulse Amplification (CPA) laser system. The system includes a fiber mode-locking oscillator for generating a seed laser. The laser system further includes a stretching stage for stretching the seed laser for projecting to an Yb doped amplifier. The Yb doped amplifier is implemented for taking advantage of a self phase modulation (SPM) to broaden a spectrum whereby an amplification of the laser pulse is without narrowing down the spectrum. The amplifier has a gain spectrum corresponding to a broaden spectrum by taking advantage of the SPM in the amplifier. The amplifier is further connected to an output fiber having a predefined length with a predefined level of SPM for broadening a spectrum.
Claims23
A fiber Chirped Pulse Amplification (CPA) laser system comprising:
- a fiber mode-locking oscillator for generating a laser for projecting to a doped amplifier implemented for taking advantage of a self phase modulation (SPM) to broaden a spectrum whereby an amplification of said laser pulse is without narrowing down said spectrum.
A fiber Chirped Pulse Amplification (CPA) laser system comprising:
- a fiber mode-locking oscillator for generating a seed laser;
- a stretching stage for stretching said seed laser for projecting to an Yb doped amplifier;
- said Yb doped amplifier implemented for taking advantage of a self phase modulation (SPM) to broaden a spectrum whereby an amplification of said laser pulse is without narrowing down said spectrum;
- said amplifier having a gain spectrum corresponding to a broaden spectrum by taking advantage of said SPM in said amplifier;
- and
- said amplifier is further connected to an output fiber having a predefined length with a predefined level of SPM for broadening a spectrum whereby an amplification of said laser pulse is without narrowing down said spectrum.
A method of generating fiber laser comprising:
- generating a laser from a fiber oscillator;
- and
- projecting said laser from said fiber oscillator to an amplifier comprising a doped fiber for taking advantage of a self phase modulation (SPM) to broaden a spectrum whereby an amplification of said laser pulse is without narrowing down said spectrum.
Dependencies are inferred from the claim text.