Nanosecond pulsed laser generation of holographic structures on metals

Krystian Lukasz Wlodarczyk, Marcus Ardron, Nick J. Weston, Duncan Paul Hand

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)
37 Downloads (Pure)

Abstract

A laser-based process for the generation of phase holographic structures directly onto the surface of metals is presented. This process uses 35ns long laser pulses of wavelength 355nm to generate optically-smooth surface deformations on a metal. The laser-induced surface deformations (LISDs) are produced by either localized laser melting or the combination of melting and evaporation. The geometry (shape and dimension) of the LISDs depends on the laser processing parameters, in particular the pulse energy, as well as on the chemical composition of a metal. In this paper, we explain the mechanism of the LISDs formation on various metals, such as stainless steel, pure nickel and nickel-chromium Inconel® alloys. In addition, we provide information about the design and fabrication process of the phase holographic structures and demonstrate their use as robust markings for the identification and traceability of high value metal goods.
Original languageEnglish
Title of host publicationLaser-based Micro- and Nanoprocessing X
EditorsUdo Klotzbach, Kunihiko Washio, Craig B. Arnold
PublisherSPIE
ISBN (Print)9781628419719
DOIs
Publication statusPublished - 4 Mar 2016
EventSPIE Photonics West 2016 - The Moscone Center, San Fransisco, United States
Duration: 13 Feb 201618 Feb 2016
http://spie.org/conferences-and-exhibitions/photonics-west

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume9736
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSPIE Photonics West 2016
CountryUnited States
CitySan Fransisco
Period13/02/1618/02/16
Internet address

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