2011/06/06 by Aleksandr Bekshaev, Bekshaev, Aleksandr
Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #physics.optics
paper · pdf · doi:10.48550/arxiv.1106.0982
6 pages, 2 figures. This note was prepared in response to the paper A. Aiello et al, Phys. Rev. Lett. 2009, 103, 100401, but was not published because I could not properly substantiate generalization of the energy redistribution rules for the case of spin flow (Eqs. (14)). However, I feel the interest to the idea and now I present it for wide audience
arxiv created 2011/06/06 · arxiv updated 2011/06/07
In an oblique section of a paraxial beam with angular momentum, the beam center of gravity (CG) is shifted with respect to its position in the normal cross section. We relate this shift with the internal energy redistribution occurring on the passage between the normal and oblique sections. The transverse orbital flow explains the effect for scalar beams, similar incorporation of the spin flow enables explanation of the CG shift in oblique sections of the elliptically polarized beams. Role of the special properties of the position-sensitive detector placed in the oblique beam section is discussed.