Abstract

In non-linear laser spectroscopy the generated signal is usually proportional to the n-th power of the laser intensity, where n is the number of photons required for the generation of one signal photon. In order to determine the order of the signal generation process, one records the signals as a function of laser intensity. Usually the logarithms of the mean signal intensities are plotted against the logarithms of the mean laser intensities. In the unsaturated case the slope of a straight line fitted to the data points yields the order n of the process.

© 2000 IEEE