Physics – Optics
Scientific paper
2011-01-05
Nature Communications 2, 447 (2011)
Physics
Optics
7 pages, 3 figures, published in Nature Communications
Scientific paper
10.1038/ncomms1434
The multiple scattering of coherent light is a problem of both fundamental and applied importance. In optics, phase conjugation allows spatial focussing and imaging through a multiply scattering medium; however, temporal control is nonetheless elusive, and multiple scattering remains a challenge for femtosecond science. Here, we report on the spatially and temporally resolved measurement of a speckle field produced by the propagation of an ultrafast optical pulse through a thick strongly scattering medium. Using spectral pulse shaping, we demonstrate the spatially localized temporal recompression of the output speckle to the Fourier-limit duration, offering an optical analogue to time-reversal experiments in the acoustic regime. This approach shows that a multiply scattering medium can be put to profit for light manipulation at the femtosecond scale, and has a diverse range of potential applications that includes quantum control, biological imaging and photonics.
Austin Rodney R. D.
Bondareff Pierre
Chatel Béatrice
Gigan Sylvain
McCabe David J.
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