Direct measurement of the central fringe velocity in Young-type experiments

We show that in the Young's two-slit experiment, the velocity of fringes on the axis of propagation is superluminal. This velocity is directly measured with a slightly modified Young set-up. The differential measurement method is generalized to the case of the Arago–Fresnel–Poisson spot in opti...

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Bibliographic Details
Published inPhysics letters. A Vol. 295; no. 2; pp. 78 - 80
Main Authors Chauvat, Dominique, Emile, Olivier, Brunel, Marc, Le Floch, Albert
Format Journal Article
LanguageEnglish
Published Elsevier B.V 18.03.2002
Subjects
Bessel beam
Superluminal velocity
Young's interferometer
42.25.Hz
42.25.Bs
Superluminal velocity
Bessel beam
Young's interferometer
42.25.Md
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Summary:We show that in the Young's two-slit experiment, the velocity of fringes on the axis of propagation is superluminal. This velocity is directly measured with a slightly modified Young set-up. The differential measurement method is generalized to the case of the Arago–Fresnel–Poisson spot in optics.
ISSN:0375-9601
1873-2429
DOI:10.1016/S0375-9601(02)00163-9