In our research, we have used two techniques of solar pumping solid state laser; side pumping and end pumping ones. In the end pumping technique, we used a Fresnel lens as a primary concentrator to concentrate the solar radiation onto a crystal of the type Nd:YAG laser (Slab Laser). With the help of a collimator lens, we increased the concentration ratio applied to the laser crystal. In the side pumping technique, we used the same primary concentrator with a secondary glass concentrator of the type of compound cylindrical concentrator (CSC) to concentrate the solar radiation on a laser rod of the type Nd:YVO4.