Qz. Wang et al., FOURIER SPATIAL FILTER ACTS AS A TEMPORAL GATE FOR LIGHT PROPAGATING THROUGH A TURBID MEDIUM, Optics letters, 20(13), 1995, pp. 1498-1500
The temporal profiles of ultrashort light pulses propagating through t
urbid media of different lengths were measured with a streak camera. V
arious Fourier spatial filters were used to select the spatial frequen
cies of the scattered pulses. The temporal profiles of the pulses scat
tered by a 0.4% Intralipid solution in a cell of 5-cm thickness were s
ignificantly narrowed because of the removal of the higher-frequency c
omponents by a Fourier spatial filter.