ElecSus: A program to calculate the electric susceptibility of an atomic ensemble

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018) Abstract We present a computer program and underlying model to calculate the electric susceptibility of a gas, which is essential to predict its absorptive and dispersive properties. Our program focuses on alkali-metal vapours where we use a matrix representation of the atomic Hamiltonian in the completely uncoupled basis in order to calculate transition frequencies and strengths. The program calculates various spectra for a weak-probe laser beam in an atomic medium with an applied axial magnetic fiel... Title of program: ElecSus Catalogue Id: AEVD_v1_0 Nature of problem Calculating the weak-probe electric susceptibility of an alkali-metal vapour. The electric susceptibility can be used to calculate spectra such as transmission and Stokes parameters. Measurements of experimental parameters can be made by fitting the theory to data. Versions of this program held in the CPC repository in Mendeley Data AEVD_v1_0; ElecSus; 10.1016/j.cpc.2014.11.023