Dispersion and Nonlinear Phase-Shift Compensation in High-Peak-Power Short-Pulse Fiber Laser Sources Using Photonic-Crystal Fibers

摘要

Photonic-crystal fibers (PCFs) with a specifically designed dispersion profile and nonlinearity are shown to enable an accurate broadband compensation of the stretcher-compressor dispersion in fiber laser sources of high-peak-power ultrashort light pulses. We demonstrate that the nonlinear phase shift in such systems can partially compensate for the fourth-order dispersion, allowing the stretcher-compression group delay to be compensated up to the fourth-order dispersion terms by using a sequence of only two fibers-a standard optical fiber and a PCF.