Spectral holography for dynamic dispersion compensation

Abstract

Spectral holograms written in a photorefractive quantum well device convert a phase-distorted femtosecond pulse into its autocorrelation, which suppresses the pulse broadening due to dispersion. Photorefractive semiconductor quantum wells have a dynamic adaptibility bandwidth that extends from quasi-steady-state up to several kHz, enabling dynamic compensation of most environmentally induced distortions and random time drifts of femtosecond pulses that occur in practical applications.