Abstract
The surface of flint glass of type F2 is patterned by nanosecond KrF excimer laser ablation. Strong UV absorption provides a comparatively low ablation threshold and precise ablation contours. By using a two-grating interferometer, periodic surface patterns with 330 nm period and 100 nm modulation depth are obtained. This method enables the fabrication of 7 mm×13 mm wide grating areas with perfectly aligned grooves without the need of high-precision sample positioning. By double exposure, crossed gratings with adjustable depths in the two orthogonal directions can be generated.
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Bekesi, J., Meinertz, J., Simon, P. et al. Sub-500-nm patterning of glass by nanosecond KrF excimer laser ablation. Appl. Phys. A 110, 17–21 (2013). https://doi.org/10.1007/s00339-012-7313-8
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DOI: https://doi.org/10.1007/s00339-012-7313-8