Experimental study on mode matching of LD end-pumped solid state lasers

In order to improve the laser efficiency of LD end-pumped solid state lasers, it is important to optimize the mode matching between laser cavity mode and pumping beam mode. In our experiments a CCD array camera is used to measure the 3-D distribution of pumping beam transformed by matching optics, and by measuring the output laser beam parameters, the intracavity mode parameters of the solid state lasers also are determined. The result is useful for designing LD end-pumped solid state lasers.