Absorption dependence of reflectance in NdAl3(BO3)4 laser crystal powder

In this work, we study theoretically the variation of the diffuse reflectance of laser crystal powders with the absorption coefficient of the powder material. As a result of the analysis, we propose a method to estimate the transport mean-free-path in laser crystal powders by using the experimental spectral reflectance of the powder and the absorption coefficient of the crystal material.