An open-source combiner for inexpensive laser diodes

Scientific-grade lasers are incredibly costly components of modern microscopes. Inexpensive laser diodes are much cheaper, often less than $100, but they have high divergence and an asymmetrical intensity profile, which makes them difficult to efficiently couple into single-mode optical fibers. Instead, they are coupled into multimode fibers, which results in the appearance of laser speckles […]

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