Application of a liquid crystal spatial light modulator to laser marking

Jonathan P. Parry; Rainer J Beck; Jonathan D. Shephard; Duncan P. Hand

doi:10.1364/AO.50.001779

Application of a liquid crystal spatial light modulator to laser marking

Jonathan P. Parry, Rainer J Beck, Jonathan D. Shephard, Duncan P. Hand

Research output: Contribution to journal › Article › peer-review

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Abstract

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

Original language	English
Pages (from-to)	1779-1785
Number of pages	7
Journal	Applied Optics
Volume	50
Issue number	12
DOIs	https://doi.org/10.1364/AO.50.001779
Publication status	Published - 20 Apr 2011

Keywords

HOLOGRAPHIC OPTICAL TWEEZERS
PROJECTION
SPECKLE
PATTERNS
BEAM

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10.1364/AO.50.001779

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Cite this

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title = "Application of a liquid crystal spatial light modulator to laser marking",

abstract = "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",

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AB - 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

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KW - PROJECTION

KW - SPECKLE

KW - PATTERNS

KW - BEAM

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