Uncooled MWIR PbSe technology outperforms CMOS in RT closed-loop control and monitoring of laser processing
Authors: Fraunhofer ILT (Aachen, Gemany), AIMEN Laser Applications Center (O Porriño, Spain)
Abstract: We report novel findings in the field of real time closed-loop control and monitoring of laser processing. Using a novel coaxial multispectral imaging system, we compare the performance of uncooled MWIR PbSe sensors to visible CMOS sensors. Comparison is performed in two different tasks: closed-loop control of laser cladding and monitoring of laser welding. In both cases, PbSe imagers show a clear advantage in terms of reliability and accuracy as for the performance achieved using the same state-of-the-art processing algorithms on images acquired simultaneously during the same laser processing trials.
Paper accepted by OSA for publication (June 2017)
PDF (OSA paper + CLAMIR specifications)