Absorption of a circularly polarized light beam
Mathematics. Physics. Mechanics
Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia
AbstractAbsorption of a circularly polarized light beam without an azimuth phase structure in a dielectric is considered. We calculate transferring of angular momentum and energy to the dielectric. Our result differs from the result of Loudon  (Phys. Rev. A68, 013806). It is found that the torque acting on the dielectric divides into surface and bulk parts in another way and is twice as much as in the paper . To explain the difference a concept of classical spin is used. Absence of the concept in the modern electrodynamics is discussed.