Analysis of lasing efficiency in neodymium doped laser crystal powders

This work presents a theoretical study of the dependence of the efficiency of laser crystal powders on the sample thickness, on the fraction of volume occupied by the particles, and on the mean particle size. An analytical expression for the lasing efficiency in terms of the sample parameters has been worked out at stationary regime. The expression describes correctly the experimental behaviour of the efficiency of neodymium doped laser crystals powders.