The Raspberry Pi auto-aligner: Machine learning for automated alignment of laser beams

We present a novel solution to automated beam alignment optimization. This device is based on Raspberry Pi computer, stepper motors, commercial optomechanics and electronic devices, the open-source machine learning algorithm M-LOOP. provide schematic drawings for custom hardware necessary operate discuss diagnostic techniques determine performance. The auto-aligning has been used improve of laser into single-mode optical fiber from manually optimized alignment, with an iteration time typically 20 minutes. example data one such measurement illustrate