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Proceedings Paper

Increasing The Flexibility Of Beam Integrating Multifaceted Mirrors For High Power Laser Surface Treatments
Author(s): Maichi Cantello; Marco Celani; Diego Cruciani; Alberto Salvoni
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Paper Abstract

Multifaceted mirrors for providing uniform intensity of the laser beam over a well-defined area are a valid alternative to kaleidoscopes and scanning optics in laser surface treatment applications. Beam integrators usually provide intensity distribution uniformity of higher quality but their applications are limited since they are less flexible than kaleidoscopes and scanning optics. Optical reimaging systems increase their flexibility but nevertheless they are still difficult to handle automatically due to the large number of degrees of freedom to be controlled. New arrangements of reimaging systems are currently being studied at RTM and the results are discussed in this paper. Initially a converging beam integrator was applied with a single spherical mirror used as a reimaging system. Flexibility was achieved by manually adjusting the position of the spherical mirror. A more complex reimaging system, based on several mirrors, was designed and assembled. The performances of both systems were tested in laser surface treatment applications with laser powers of up to 15 kW. Diverging beam integrators were considered on account of their low cost and wider availability in Italy. Reimaging of these beam integrators presents different problems and offers new possibilities. Reimaging systems with automatic handling of the mirrors were designed by RTM researchers The problems and advantages of these automatic and flexible beam integrating systems are discussed in detail.

Paper Details

Date Published: 28 March 1989
PDF: 8 pages
Proc. SPIE 1024, Beam Diagnostics and Beam Handling Systems, (28 March 1989); doi: 10.1117/12.950186
Show Author Affiliations
Maichi Cantello, Istituto per le Ricerche di Tecnologia Meccanica e per l'Automazione (Italy)
Marco Celani, Istituto per le Ricerche di Tecnologia Meccanica e per l'Automazione (Italy)
Diego Cruciani, Istituto per le Ricerche di Tecnologia Meccanica e per l'Automazione (Italy)
Alberto Salvoni, Istituto per le Ricerche di Tecnologia Meccanica e per l'Automazione (Italy)


Published in SPIE Proceedings Vol. 1024:
Beam Diagnostics and Beam Handling Systems
Alberto Sona, Editor(s)

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