Micromachining of transition metal ion doped glass surface by using a pulsed Nd:YAG (532 nm) laser for the optical device

Abstract Micromachining using a Nd:YAG laser for commercial glass have been developed. The composition of the glass is commercial soda–lime and Borosilicate glasses doped with cobalt oxide. After machining with the second harmonic beams of a pulsed Nd:YAG laser, a raised dome was formed. This report was conducted for researching the relationship absorption coefficient and laser ablation energy, and for finding out the possibility of the fabrication of optical device. The maximum height of the dome in the glass was 6.867 μm and had a radius was about 80 μm. We found that the Co ions acted as sensitizers in the laser machining of the glass and this process can be used for optical device, MLA (micro lens array), 3D lenticular sheet and homogenizer of laser optics, fabrication process.