Patent ID: 7486436

Claim:
An all fiber chirped pulse amplification system, comprising: an optical fiber amplifier having an input and an output that amplifies optical pulses having a center wavelength λc; a pulse compressing length L1 of hollow core photonic bandgap fiber, said photonic bandgap fiber (i) configured to compress pulse width to less than 200 femtoseconds, (ii) having a dispersion value D1 and a dispersion slope S1 that varies over a wavelength λ of the pulses (iii) is optically connected to the output of the fiber amplifier and (iv) having a k-parameter defined by a ratio of D1 over the slope of the function D1(λ) that is larger than 50, and a pulse stretching length L2 of dispersion compensating optical fiber connected to the input of the fiber amplifier having a dispersion value D2 such that L1D1=−L2D2.