visualization_2.mp4

Intra-pulse polarization dynamics associated with Raman amplification of quantum noise, self-phase modulation, and cross-phase modulation for an ensemble of 60 7 ps, 8 kW, linearly polarized Gaussian pulses after 1 m of all-normal dispersion photonic crystal fiber. The polarization is quasi-chaotic where Raman amplification dominates (between -5 ps and 1.5 ps), and remains deterministic where self- and cross-phase modulation dominate in the pulse wings. The pulses were launched with a 4 degree polarization orientation with respect to a principal fiber axis. Left top, center, and bottom: field magnitude, polarization orientation, and ellipticity as a function of time. Right: Polarization ellipse as a function of time.