Trepannng holes in glass. A thin glass slide is moved under a focussed laser beam to cut an array of holes. The beam size is of the order of 20 microns and cutting can be achieved with high precision and quality. Glass machining can be achieved with IR solid-state lasers carbon dioxide lasers (far IR) and short-pulse solid-state lasers and the choice depends on the application the quality requirements and other issues such as amount of cracking and damage which can be tolerated.
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