Design and experimental study of the high uniformity semiconductor linear laser light source

摘要

In order to meet the requirements of the new laser radar and laser active lighting for the miniaturized line light source, alinear laser light source that can be transmitted over long distances has been successfully designed and prepared. Thislinear laser light source is based on 808nm semiconductor laser. Firstly, a set of orthogonal placement plano-convexaspherical lens is used for collimating the laser beam of gauss distribution, thus the parallel beams that can betransmitted over long distances is obtained, and then through the Powell prism. Finally, the semiconductor laser isshaped into a laser light source with the slender and uniform intensity distribution. And we also have carried out anexample design simulation with the Zemax optical design software and built an experimental system, and a laser lightsource has been successfully prepared with the divergence angles 54° of the fast directions and the uniformity 23.5% ofthe linear spot. The experimental results can match the Zemax simulation results well, which proves that the designmethod in this article is correct, simple and useful.