Thermodynamic Analysis of the Nd: YAG Disk Laser with MultiformPumping

摘要

In this paper, we demonstrate the thermodynamic effects of the Nd:YAG Disk laser by pumping and cooling approaches,which is based on the theory of analytical thermal analysis. The thermal models are established to analyze the workingcharacteristics of the Nd:YAG disk crystal, and they match the actual working state of the disk laser crystal. Theanalytical expressions for temperature field within Nd:YAG disk crystal are yielded by using a new approach to solve theheat conduction equation of isotropic material. The analytical expression of thermal distribution of the Nd:YAG diskcrystal is obtained to analyze the thermal distortion field and additional optical path differences caused by heat in theNd:YAG disk crystal. In the end of this paper, a series of the numerical simulations are performed to demonstrate thethermodynamic analysis of the Nd:YAG disk crystal in different methods of pumping and cooling. The numericalsimulation results match well with the academic outcomes on the whole.