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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 2 — Jan. 27, 2014
  • pp: 1387–1393

Optical set-up for dynamic superposition of three laser beams for structuring and polishing applications

André Temmler, Oliver Pütsch, Jochen Stollenwerk, Edgar Willenborg, and Peter Loosen  »View Author Affiliations


Optics Express, Vol. 22, Issue 2, pp. 1387-1393 (2014)
http://dx.doi.org/10.1364/OE.22.001387


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Abstract

Structuring by remelting is an innovative approach for structuring metallic surfaces with laser radiation, where no material is removed but reallocated while molten. Based on this remelting principle an innovative structuring technique is investigated, where laser beams are superposed. A melt pool is generated by a cw laser beam with constant feed rate. A pulsed laser is superposed onto the cw laser and evaporates a small amount of molten material and, therefore, generates vapour pressure, which shapes the melt pool surface. The solidification follows this newly shaped surface. For this process a new optical system was designed and built up, which allows the combination of cw and pulsed laser beams.

© 2014 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(140.3298) Lasers and laser optics : Laser beam combining
(140.3325) Lasers and laser optics : Laser coupling
(220.1080) Optical design and fabrication : Active or adaptive optics

ToC Category:
Laser Microfabrication

History
Original Manuscript: November 12, 2013
Revised Manuscript: December 16, 2013
Manuscript Accepted: December 21, 2013
Published: January 14, 2014

Citation
André Temmler, Oliver Pütsch, Jochen Stollenwerk, Edgar Willenborg, and Peter Loosen, "Optical set-up for dynamic superposition of three laser beams for structuring and polishing applications," Opt. Express 22, 1387-1393 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-2-1387


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References

  1. A. Temmler, “Structuring by remelting,” Tailored Light [Book], Reinhart Poprawe, 203–207 (2010)
  2. A. Temmler, E. Willenborg, and K. Wissenbach, “Designing surfaces by laser remelting,” Proc. of 7th International Conference on MicroManufacturing. Evanston, 297 – 305 (2012).
  3. N. Pirch, S. Höges, and K. Wissenbach, “Mechanisms of surface rippling during laser polishing,” Proceedings of the 8. International Seminar on Numerical Analysis of Weldability. Graz-Seggau, 25–27 (2006)

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