The effect of the pumping inhomogeneity factor on spherical aberration in a dynamic stability cavity

Abstract

Based on analytical theory, the effect of the pumping inhomogeneity factor β on spherical aberration is carried out. We establish a wavefront information measurement experimental device in a plano-plano symmetry cavity to obtain spherical aberration at the crystal output end face. The results show that the magnitudes of the pumping inhomogeneity factor increase with the augmentation of crystal length or doping concentration, which can affect the numerical value of spherical aberration and the position of the zero point of spherical aberration. Finally, we analyze the output beam quality factor and get the optimal region where the zero point of the spherical aberration exists.