If laser processes are from a few percent to maybe 20 percent, why not skip the laser part and just collimate focus the source light directly, for burning and cutting? - Quora
How to choose the correct focus position during laser cutting
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Laser beam and optic factors. The unfocused laser beam converges in the... | Download Scientific Diagram
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Focusing and defocusing. Laser beam creates deeper impact at a narrow... | Download Scientific Diagram
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