Temporal characteristics of femtosecond pulse propagation through a scattering surface

The time domain characteristics of femtosecond pulse propagation through a scattering surface are investigated theoretically and experimentally. The input femtosecond pulse and output pulse from scattering surface are measured and compared by frequency-resolved optical gating. Theoretical analysis and experimental results show that when femtosecond pulse propagates through scattering surface, it will be broadened and distorted. The full time width at half maximam peak of input pulse is 64 fs, and the average of that of transmitted pulse is 117 fs. The characteristics of the transmitted pulse are discussed. Probability functions of real and imaginary components of transmitted pulse show good agreement with Gaussian distribution. Probability distribution of the intensity follows exponential distribution. The experimental results of the intensity autocorrelation of input pulse and intensity correlation of femtosecond time domain scattered field shown, and the time correlation between them are also discussed.