Theoretical Investigation of the Faraday Rotation Effect in Atomic Alkali Nano-Layers

Theoretical studies of the Faraday rotation (FR) effect in alkali vapors contained in extremely thin cells are presented. It is shown that the spectra of the FR signal are well frequency resolved despite the huge number of atomic transitions. This allows one to study the evolution of the Cs D-1 (lambda = 895 nm) line hyperfine structure of F-g = 4 -> F-e = 3, 4 atomic transitions in magnetic fields. The presented theoretical model predicts the coherent Dicke narrowing effect and its revival with a periodicity Delta(L) = lambda. The practical applications of the FR are noted.