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Journal articles

Second order coherence of broadband down-converted light on ultrashort time scale determined by two photon absorption in semiconductor

Abstract : We study the photon correlation properties of broadband parametric down-converted light. The measurement of the photon correlation is carried out thanks to a modified Hanbury Brown-Twiss interferometer based on two photon absorption in GaAs detector. Since this method is not affected by the phase matching conditions of the detecting apparatus (so called “final state post-selection”), the detection bandwidth can be extremely large. This is illustrated by studying, with the same apparatus, the degree of second order coherence of parametric light in both degenerate and non-degenerate cases. We show that our experiment is able to determine the coherent as well as the incoherent contributions to the degree of second order coherence of parametric light with a time resolution in the fs range scale.
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Submitted on : Monday, January 31, 2011 - 5:55:02 PM
Last modification on : Thursday, March 17, 2022 - 10:08:13 AM
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Fabien Boitier, Antoine Godard, Aleksandr Ryasnyanskiy, Nicolas Dubreuil, Philippe Delaye, et al.. Second order coherence of broadband down-converted light on ultrashort time scale determined by two photon absorption in semiconductor. Optics Express, Optical Society of America - OSA Publishing, 2010, 18 (19), p. 20401-20408. ⟨hal-00561197⟩

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