Anti-Reflection Nanostructures on Tempered Glass by Dynamic Beam Shaping

• Main Authors: Petr Hauschwitz, Jan Brajer, Danijela Rostohar, Jaromír Kopeček, Tomáš Mocek, Martin Cimrman, Michal Chyla, Martin Smrž
• Format: Article
• Language: English
• Published: MDPI AG 2021-03-01
• Series: Micromachines
• Subjects: multi-beam micromachning; functionalization; tempered glass; gloss reduction; anti-reflection
• Online Access: https://www.mdpi.com/2072-666X/12/3/289

Reflectivity and surface topography of tempered glass were modified without any thermal damage to the surroundings by utilizing 1.7 ps ultrashort pulsed laser on its fundamental wavelength of 1030 nm. To speed up the fabrication, a dynamic beam shaping unit combined with a galvanometer scanning head was applied to divide the initial laser beam into a matrix of beamlets with adjustable beamlets number and separation distance. By tuning the laser and processing parameters, reflected intensity can be reduced up to 75% while maintaining 90% of transparency thus showing great potential for display functionalization of mobile phones or laptops.