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

被引：8
作者：
Beck, Rainer J. [1 ]
Waddie, Andrew J. [2 ]
Parry, Jonathan P. [1 ]
Shephard, Jonathan D. [1 ]
Taghizadeh, Mohammad R. [2 ]
Hand, Duncan P. [1 ]
机构：
[1] Heriot Watt Univ, Sch Engn & Phys Sci, Appl Opt & Photon Grp, Edinburgh EH14 4AS, Midlothian, Scotland
[2] Heriot Watt Univ, Sch Engn & Phys Sci, Diffract Opt Grp, Edinburgh EH14 4AS, Midlothian, Scotland
来源：
LASERS IN MANUFACTURING 2011: PROCEEDINGS OF THE SIXTH INTERNATIONAL WLT CONFERENCE ON LASERS IN MANUFACTURING, VOL 12, PT B | 2011年 / 12卷
关键词：
Spatial light modulator; laser micromachining; iterative Fourier transform algorithm; DIFFRACTIVE OPTICAL-ELEMENTS; DESIGN;
D O I：
10.1016/j.phpro.2011.03.158
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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.
引用
收藏
页码：465 / 469
页数：5
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