Compact high-brightness and highly manufacturable blue laser modules

摘要

Blue laser diode sources have already proved to be an effective alternative for material processing, especially of high reflective materials, such as copper; now the challenge is to increase their power while improving brightness and reducing the cost-per-watt. The paper presents the development of a family of blue laser modules that, making use of the same platform and assembly lines of similar 9xx nm modules, can achieve an unprecedented combination of power, brightness, compactness and cost reduction. These modules rely on a proprietary architecture to combine a plurality of chips through spatial and polarization multiplexing, obtaining up to 100 W of output power in a 100 Jim fiber. Preliminary experimental results for module making use of spatial multiplexing report 35 W output power in a 50 μm fiber.