Direct laser-writing of optical micro-structures for robust traceability marking of metal components

Krystian Lukasz Wlodarczyk; Marcus Ardron; Nick Weston; Matthew Kidd; Duncan Paul Hand

Direct laser-writing of optical micro-structures for robust traceability marking of metal components

Krystian Lukasz Wlodarczyk, Marcus Ardron, Nick Weston, Matthew Kidd, Duncan Paul Hand

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Abstract

This paper presents a laser-based process for the direct generation of security markings (in the form of reflective phase holograms) on the surface of metals. In order to achieve optically smooth holograms, we use a nanosecond pulsed laser operating at a 355 nm wavelength. This approach allows the metal surface to be structured, either by melting or the combination of melting and evaporation, with the required sub-micron depth control. The interaction between the UV 35 ns laser pulses and the surface of a 304-grade stainless steel, 99% pure nickel and two nickel-chromium Inconel® alloys is investigated in details and described in this paper.

Original language	English
Publication status	Published - 2014
Event	15th International Symposium on Laser Precision Microfabrication 2014 - Radisson BLU Hotel Lietuva, Vilnius, Lithuania Duration: 17 Jun 2014 → 20 Jun 2014

Conference

Conference	15th International Symposium on Laser Precision Microfabrication 2014
Country/Territory	Lithuania
City	Vilnius
Period	17/06/14 → 20/06/14

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title = "Direct laser-writing of optical micro-structures for robust traceability marking of metal components",

abstract = "This paper presents a laser-based process for the direct generation of security markings (in the form of reflective phase holograms) on the surface of metals. In order to achieve optically smooth holograms, we use a nanosecond pulsed laser operating at a 355 nm wavelength. This approach allows the metal surface to be structured, either by melting or the combination of melting and evaporation, with the required sub-micron depth control. The interaction between the UV 35 ns laser pulses and the surface of a 304-grade stainless steel, 99% pure nickel and two nickel-chromium Inconel{\textregistered} alloys is investigated in details and described in this paper.",

author = "Wlodarczyk, {Krystian Lukasz} and Marcus Ardron and Nick Weston and Matthew Kidd and Hand, {Duncan Paul}",

year = "2014",

language = "English",

note = "15th International Symposium on Laser Precision Microfabrication 2014 ; Conference date: 17-06-2014 Through 20-06-2014",

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TY - CONF

T1 - Direct laser-writing of optical micro-structures for robust traceability marking of metal components

AU - Wlodarczyk, Krystian Lukasz

AU - Ardron, Marcus

AU - Weston, Nick

AU - Kidd, Matthew

AU - Hand, Duncan Paul

PY - 2014

Y1 - 2014

N2 - This paper presents a laser-based process for the direct generation of security markings (in the form of reflective phase holograms) on the surface of metals. In order to achieve optically smooth holograms, we use a nanosecond pulsed laser operating at a 355 nm wavelength. This approach allows the metal surface to be structured, either by melting or the combination of melting and evaporation, with the required sub-micron depth control. The interaction between the UV 35 ns laser pulses and the surface of a 304-grade stainless steel, 99% pure nickel and two nickel-chromium Inconel® alloys is investigated in details and described in this paper.

AB - This paper presents a laser-based process for the direct generation of security markings (in the form of reflective phase holograms) on the surface of metals. In order to achieve optically smooth holograms, we use a nanosecond pulsed laser operating at a 355 nm wavelength. This approach allows the metal surface to be structured, either by melting or the combination of melting and evaporation, with the required sub-micron depth control. The interaction between the UV 35 ns laser pulses and the surface of a 304-grade stainless steel, 99% pure nickel and two nickel-chromium Inconel® alloys is investigated in details and described in this paper.

M3 - Paper

T2 - 15th International Symposium on Laser Precision Microfabrication 2014

Y2 - 17 June 2014 through 20 June 2014

ER -

Direct laser-writing of optical micro-structures for robust traceability marking of metal components

Abstract

Conference

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