Transverse shift of a focal spot due to switching of the sign of circular polarization
Baranova N. B., Savchenko A. Yu., Zel'dovich B. Ya.
An axially symmetric optical lens made of isotropic material produces a transverse shift Δχοζσλ/2π of the focal spot "center of gravity" under the switch of circular polarization sign σ— =Ы of a plane incident wave (ez+iaey)exp(ikz). This can be accomplished if most of the upper half 0>>0) of the input plane is illuminated. This simple effect is discussed in the general context of the spin-orbit interaction of the photon.
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![](/ps/1298/article_19601_800_head.png "An axially symmetric optical lens made of isotropic material produces a transverse shift <b><i>Δχοζσλ/2π </i></b>of the focal spot "center of gravity" under the switch of circular polarization sign <b><i>σ— </i></b>=Ы of a plane incident wave <b><i>(e<sub>z</sub>+iae<sub>y</sub>)exp(ikz). </i></b>This can be accomplished if most of the upper half 0>>0) of the input plane is illuminated. This simple effect is discussed in the general context of the spin-orbit interaction of the photon.")