The Imbert–Fiodaraŭ effect (named after Fiodar Ivanavič Fiodaraŭ (1911 – 1994) and Christian Imbert (1937 – 1998)[1] is an optical phenomenon in which a beam of circularly or elliptically polarized light undergoes a small sideways shift, when refracted or totally internally reflected. The sideways shift is perpendicular to the plane containing the incident and reflected beams. This effect is the circular polarization analog of the Goos–Hänchen effect.


Frederique de Fornel, Evanescent Waves: From Newtonian Optics to Atomic Optics, Springer (2001), pp. 13–17
Frank Pillon, Herve Gilles, and Sylvain Girard, Experimental observation of the Imbert–Fedorov transverse displacement after a single total reflection, Applied Optics, volume 43, number 9, page 1863 (2004)
K. Y. Bliokh, A. Aiello, Goos–Hänchen and Imbert–Fedorov beam shifts: an overview, J. Opt. 15 (2013) 014001.

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