ALPhANOV has launched a new R&D project on refractive-index modification in transparent materials by near-infrared or green femtosecond laser focused using a high numerical aperture lens and coupled to micrometric precision stages.
The refractive-index modification is carried out only in the region of the focal point, leading to modification areas of linear dimension up to 3 μm and depth of about 5 μm. Bylocally modiying successive areas, all the geometries can be realized (lines, squares, rounds, cylinders, ...).
The process can be used on different materials:
With Applications in: