Calculation and analyze of homogeneity of diode side pumped solid laser

The calculating model of pumping energy distribution in a solid laser medium side pumped by semiconductor laser diode is made in this paper.The absorption and distribution of the pumping energy is analog calculated and the result of the calculation agrees with the result of some experiment very much.After analyze the result of the calculation we get the general rule that how the parameters(size of the medium,absorption coefficient of the medium and distance between the laser diode and the medium)affect the homogeneity of pumping energy distribution in the medium.The advantage and disadvantage of the rod medium and slab medium side pumped by laser diode are analyzed too.