Theoretical calculation of the thermal induced depolarization in high power lasers

This research aimed to study the thermal induced depolarization in system consist of two optical elements separated by quartz. The Mathcad 14 program used to calculate the results. The theoretical suggestion model has solved and shown the effect of different parameters on value of induced depolarization .The depending of induced depolarization on type of the used elements was studied with calculating the optical anisotropy property (ζ) of the two optical elements. The effect of rotator of quartz element (θr) that separate between two optical elements has been investigated. The effect of circular birefringence on the induced thermal depolarization with using different values of ratio of normalized powers in the first and second elements was studied. In this research the results showed which parameter strongly effect on thermal depolarization .The reduction of thermal induced depolarization is important for laser system for best operating to avoid loss in power.