In this thesis we report two new application cases for the Artificial Neuron Network they are focus on the laser plus characterization and the locating of light spot. By using the learning ability and the function approximation, we report a method to retrace the phase in the frequency domain of the origin light field by the second harmonic generate spectrum, and also provide a possible experimental setup for realizing this measurement. On the other hand, by training Artificial Neuron Network to learn the position of a light spot within an image and combining the search method, the location of multiple light spot can be realized.