On formula for natural linewidth in Fabry-Perot lasers; simulation of experiments

Formulas for natural linewidth in Fabry-Perot semiconductor lasers in dimensional and non-dimensional forms are derived on the basis of the formula for the line shape which has been deduced when applying nonlinear photorefractivity. Medium, phase, and amplitude components of the natural linewidth are taken into account. We define characteristic parameters describing the natural linewidth of Fabry-Perot semiconductor lasers, find their numerical values by solving an inverse problem, and then simulate all experimental measurements represented in the literature we have available; then non-dimensional natural linewidth is simulated. This development brings the subject of understanding physics and capability of calculating laser parameters, as well as simulating the natural linewidth of semiconductor lasers, to a qualitatively new level.