ABRAHAM, Emmanuel; BORDENAVE, E.; TSURUMACHI, N.; JONUSAUSKAS, Gediminas; OBERLE, J.; RULLIERE, C.; MITO, A.

doi:10.1364/ol.25.000929

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ABRAHAM, Emmanuel

BORDENAVE, E.
Centre de physique moléculaire optique et hertzienne [CPMOH]

TSURUMACHI, N.
Centre de physique moléculaire optique et hertzienne [CPMOH]

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Optics Letters. 2000-06-15, vol. 25, n° 12, p. 929-931

Optical Society of America - OSA Publishing

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An original femtosecond Cr4+:forsterite laser source associated with a nonlinear optical correlator was used for imaging through scattering media with 1220-nm light. The system, which operates as an ultrafast optical gate by sum-frequency generation in a nonlinear crystal, was able to detect the light reflected from a resolution chart hidden in a turbid medium, at an attenuation of as much as 15 mean free paths. When the object was illuminated with a collimated beam, real-time two-dimensional images were obtained, with a maximum transverse resolution of ∼20 µm.< Réduire

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Real-time two-dimensional imaging in scattering media by use of a femtosecond Cr4+: forsterite laser

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