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Dielectric masks are patterned reflective dielectric layer systems on transparent substrates. As such they are amplitude masks, which consist of areas with different transmission, in the extreme case 0 and 1. Customized masks can be fabricated by ablative structuring of dielectric layer stacks. Because of the high damage threshold compared to conventional chrome masks, they are applied mainly in high power applications (material processing).
Dr. Jürgen Ihlemann
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