Compact Writing and Reading Head for Data Recording on Ceramic Material

A method for recording data in a layer of a ceramic material, the method comprising:

• providing the layer of a ceramic material;
• and
• selectively illuminating a plurality of regions of the layer of the ceramic material with a laser beam using a digital micromirror device;
• wherein parameters of the laser beam and a time of illumination for each of the selectively illuminated regions are configured to ablate each of the selectively illuminated regions in order to record the data in the layer of the ceramic material by creating recesses in the layer of the ceramic material;
• and
• wherein the laser beam originates from a picosecond laser or from a femtosecond laser, wherein the laser beam passes in order through a prism or semi-transparent mirror, hits the digital micromirror device, and again passes through the prism or semi-transparent mirror before selectively illuminating the plurality of regions of the layer of the ceramic material.

A device for recording data in a layer of a ceramic material, the device comprising:

• a laser source comprising a picosecond laser or a femtosecond laser;
• a digital micromirror device adapted to emit multiple laser beams;
• a prism or semi-transparent mirror positioned between the laser source and the digital micromirror device;
• a substrate holder for mounting a substrate having a layer of ceramic material;
• and
• focusing optics adapted for focusing each of the multiple laser beams emitted by the digital micromirror device onto the substrate mounted on the substrate holder to record the data.