Beck, Rainer J

Hand, Duncan P.

Parry, Jonathan P.

Shephard, Jonathan D.

English

Jonathan P. Parry

Rainer J. Beck

Jonathan D. Shephard

Duncan P. Hand

Crossref

Applied Optics

Application of a liquid crystal spatial light modulator to laser marking

Laser marking is demonstrated using a nanosecond (ns) pulse duration laser in combination with a liquid crystal spatial light modulator to generate two-dimensional patterns directly onto thin films and bulk metal surfaces. Previous demonstrations of laser marking with such devices have been limited to low average power lasers. Application in the ns regime enables more complex, larger scale marks to be generated with more widely available and industrially proven laser systems. The dynamic nature of the device is utilized to improve mark quality by reducing the impact of the inherently speckled intensity distribution across the generated image and reduce thermal effects in the marked surface. (C) 2011 Optical Society of America</p

Heriot Watt Pure

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Application of a liquid crystal spatial light modulator to laser marking

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Heriot Watt Pure

Heriot Watt Pure