INFLUENCE OF THE TRAJECTORY-DISTRIBUTION FUNCTION ON THE TEMPORAL ANDSPECTRAL CORRELATIONS IN DISORDERED MEDIA

The precise shape and width of the temporal and spectral correlation f unctions in fluctuations that appear when coherent optical pulses prop agate through static disordered media depend on the observation time a nd the pulse duration of the incident light. When the pulse duration o f the incident light is much longer than the distribution of trajector y length, a previously shown minimum uncertainty relation in the tempo ral and spectral fluctuations breaks down. Detailed experimental resul ts obtained using picosecond pulses show a good agreement with the the oretical calculation based on the diffusion approximation.