Design of embedded laser beam measurement system

In view of disadvantages lying in traditional laser beam quality measurement, an evaluation system was developed which can be used to detect laser beam quality automatically, M² factor was used to evaluate the laser beam quality which was suggested by ISO. This system can be used in the laboratory and industry field, which collected image data of the laser speckle by image sampling system, stored image data and transmitted them to the embedded processor ARM11 under the control of FPGA, which is the abbreviation of field programmable gate array and DSP which is the abbreviation of digital signal processor, then run the image processing application software, executed laser parameter calculating algorithm, imitated laser beam transmitting hyperbolic curve in space, calculated the value of M². Results showed that this system had advantages such as small size, light scale, low cost, simple operation, easy use, high measurement precision and so on, which had better application and popularize value.