Design of Fast-axis Collimated Image Inspection System for Semiconductor Lasers

摘要

To address the problem of detecting the size and shape of the spot image of the semiconductor laser after collimation, Our group designed a detection system of Matlab-based laser collimated square spot image. The system used the image processing unit in Matlab to write algorithms to detect the size, area occupancy, the difference between the largest area of the image and the standard rectangular frame, the ratio of fast and slow axis divergence angles, and other parameters of the collimated image, and the results are displayed on the human-computer interface after image processing and comparison, which can determine the eligibility of the collimated image in real-time. Though the analysis and comparison of the collimation experimental data, the system has positive real-time, stable, and high accuracy, the semiconductor laser beam shaping has a certain practical and research value.