Adaptive Laser Beam Shaping for Laser Marking using Spatial light Modulator and Modified Iterative Fourier Transform Algorithm

Rainer J Beck, Andrew J. Waddie, Jonathan P. Parry, Jonathan D. Shephard, Mohammad R. Taghizadeh, Duncan P. Hand

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

10 Citations (Scopus)

Abstract

In this paper we present the application of a modified iterative Fourier transform algorithm in combination with a closed loop feedback control using a CCD camera in order to improve the diffraction efficiency and uniformity of two-dimensional intensity distributions generated using a spatial light modulator (SLM). The impact of these improvements is demonstrated for nanosecond laser marking of a two-dimensional data matrix on a thin metal film utilising the dynamic nature of the SLM.

Original languageEnglish
Title of host publication Lasers in Manufacturing 2011: Proceedings of the Sixth International WLT Conference on Lasers in Manufacturing, Vol 12, Pt B
EditorsM Schmidt, M Zaeh, T Graf, A Ostendorf
Place of PublicationAMSTERDAM
PublisherElsevier
Pages465-469
Number of pages5
DOIs
Publication statusPublished - 2011
Event6th International WLT Conference on Lasers in Manufacturing 2011 - Munich, Germany
Duration: 23 May 201126 May 2011

Conference

Conference6th International WLT Conference on Lasers in Manufacturing 2011
Abbreviated titleLiM 2011
Country/TerritoryGermany
CityMunich
Period23/05/1126/05/11

Keywords

  • Spatial light modulator
  • laser micromachining
  • iterative Fourier transform algorithm
  • DIFFRACTIVE OPTICAL-ELEMENTS
  • DESIGN

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