Direct CO_2 laser-based generation of holographic structures on the surface of glass
Open Access
- 19 January 2016
- journal article
- Published by Optica Publishing Group in Optics Express
- Vol. 24 (2) , 1447-1462
Abstract
A customized CO2 laser micromachining system was used for the generation of phase holographic structures directly on the surface of fused silica (HPFS®7980 Corning) and Borofloat®33 (Schott AG) glass. This process used pulses of duration 10µs and nominal wavelength 10.59µm. The pulse energy delivered to the glass workpiece was controlled by an acousto-optic modulator. The laser-generated structures were optically smooth and crack free. We demonstrated their use as diffractive optical elements (DOEs), which could be exploited as anti-counterfeiting markings embedded into valuable glass-made components and products.Keywords
Funding Information
- Engineering and Physical Sciences Research Council (EPSRC) (EP/K030884/1)
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