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Direct CO_2 laser-based generation of holographic structures on the surface of glass

Krystian L. Wlodarczyk, Nicholas J. Weston, Marcus Ardron, Duncan P. Hand
2016 Optics Express  

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Direct CO2 laser-based generation of holographic structures on the surface of glass Wlodarczyk, Krystian Lukasz; Weston, Nick J.; Ardron, Marcus; Hand, Duncan Paul Abstract: A customized CO 2 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
more » ... ece 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.
doi:10.1364/oe.24.001447 pmid:26832525 fatcat:ibvjbhgmc5ey5ns2unlt6cv6cm
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Krystian L. Wlodarczyk, Nicholas J. Weston, Marcus Ardron, Duncan P. Hand. "Direct CO_2 laser-based generation of holographic structures on the surface of glass." Optics Express 24.2 (2016) 1447