 Imbert–Fedorov effect

The Imbert–Fiodaraŭ effect (named after Fiodar Ivanavič Fiodaraŭ (1911 – 1994) and Christian Imbert (1937 – 1998) 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.