Non-uniformity of cross-beam laser power distribution as a source of errors in non-linear spectroscopy

Abstract

We investigated errors arising in calculations of optical signals in non-linear laser spectroscopy due to neglection of non-uniformity in cross-beam laser power distribution. The following three cases of non-linear emission are considered: saturated molecular luminescence, sequential multi-photon excitation of luminescence, laser-induced incandescence of micro-particles.