A fiber Chirped Pulse Amplification (CPA) laser system includes a fiber mode-locking oscillator for generating a laser for projecting to a fiber stretcher for stretching a pulse width of the laser wherein the stretcher further comprising a Photonic Bandgap (PBG) fiber having a lower nonlinearity and an abnormal dispersion than a solid core fiber for connecting and transmitting a laser from the stretcher to a multistage amplifier for amplifying the laser into an output laser whereby a separate compressor is not required.

 
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> Dispersion managed fiber stretcher for high-energy short pulse femotosecond fiber laser system

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