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 language | English |
|---|---|
| Title of host publication | Lasers in Manufacturing 2011: Proceedings of the Sixth International WLT Conference on Lasers in Manufacturing, Vol 12, Pt B |
| Editors | M Schmidt, M Zaeh, T Graf, A Ostendorf |
| Place of Publication | AMSTERDAM |
| Publisher | Elsevier |
| Pages | 465-469 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | 6th International WLT Conference on Lasers in Manufacturing 2011 - Munich, Germany Duration: 23 May 2011 → 26 May 2011 |
Conference
| Conference | 6th International WLT Conference on Lasers in Manufacturing 2011 |
|---|---|
| Abbreviated title | LiM 2011 |
| Country/Territory | Germany |
| City | Munich |
| Period | 23/05/11 → 26/05/11 |
Keywords
- Spatial light modulator
- laser micromachining
- iterative Fourier transform algorithm
- DIFFRACTIVE OPTICAL-ELEMENTS
- DESIGN