Pump laser induced atomic and molecular angular momentum: Some spectral effects

Abstract

Some new spectral effects of the conjugate produce π of the electric field strengths of a pump laser are introduced in atomic and molecular spectroscopy through a mediating molecular property tensor: atomic or molecular spin polarizability α s. Both π and α s have the parity inversion and motion reversal symmetries of angular momentum, and the quantum theory of angular momentum applies in both cases, with the interaction Hamiltonian −α s · π 2 . Some simple examples are considered of the effect of π in atomic and molecular electronic, vibration-rotation, pure rotation, and resonance spectroscopy.