Determination of the effective stimulated emission cross section for a neodymium laser with a selective resonator

A new method is proposed for determining σ_eff and σ ⁰_eff. It is shown that as a result of the extremal variation of the gain and of the selective properties of a Fabry–Perot interferometer inserted in the resonator, kinetic equations for an inhomogeneously broadened line can be simplified considerably and an analytic relationship between σ_eff and the experimentally determined parameters can be obtained fairly easily.