Tune-out wavelengths for potassium

Abstract

The five longest tune-out wavelengths for the potassium atom are determined using a relativistic structure model which treats the atom as consisting of a single valence electron moving outside a closed shell core. The importance of various terms in the dynamic polarizability in the vicinity of the 4p J, 5pJ, and 6pJ transitions are discussed. © 2013 American Physical Society.