Semiconductor dot laser diodes emit an elliptical beam typically with an ellipticity ratio of 1.5:1 to 2.5:1 (single transverse mode); 2.5:1 to 4.0:1 (multi-mode). Circular beam dot lasers have an ellipticity ratio <1.2:1. Elliptical dot laser modules are ideal for alignment, particle detection etc. while circular dot laser modules are useful for digital X-ray scanning, precise measurement applications and more.
ProPhotonix offers both elliptical and circular dot lasers. With over two decades of experience, our team of experts specializes in techniques to increase ellipticity and circularity (spacial filtering, cylindrical lens, prism pair etc.) based on specific application needs.