Method for producing raised structures on glass elements, and glass element produced according to the method

A method for modifying a surface of a platelike glass element, comprising:

• providing the glass element;
• generating a filamentary channel in a first surface of the glass element using a laser beam from an ultrashort pulse laser, the filamentary channel having a longitudinal direction that is transverse to the first surface;
• and
• widening the filamentary channel with an etching medium to ablate glass of the glass element at an adjustable ablation rate to form a hole in the glass element,
• wherein the etching medium generates a features in the first surface selected from a group consisting of:
• an elevation in the first surface at least partially around the hole with a height of less than 5 μm, a plurality of plateau-like elevations with a height of greater than 0.05 μm, a plurality of plateau-like elevations with a height of greater than 0.5 μm, a plurality of plateau-like elevations with a height of greater than 1 μm, a plurality of plateau-like elevations with a height of greater than 10 μm, an average roughness value of greater than 15 nm, an average roughness value of greater than 25 nm, an average roughness value of greater than 40 nm, an average roughness value of less than 100 nm, an average roughness value of less than 80 nm, an average roughness value of less than 60 nm, and combinations thereof.