Publication: New optics for industrial laser applications: VariSpot® and VariFoc™.
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2008
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SPIE - Int Soc Optical Engineering
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Abstract
Two new families of zoom optical systems, developed for industrial and medical laser applications, are introduced. First we discuss the main physical processes involved in industrial laser applications and the requirements for the optics. The spatial beam parameters are reviewed, explaining the relatively new concepts of intrinsic stigmatism and intrinsic astigmatism. Then two new zoom systems are discussed, including experimental examples: VariSpot® which delivers round spots with adjustable diameters at fixed working distances, and VariFoc™, able to adjust spot shapes and sizes at different working distances. We conclude that these systems represent a valuable addition for industrial and medical lasers.
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© 2008 SPIE Digital Library. Conference on Industrial Laser Applications (INDLAS 2007)(May 23-25, 2007. Bran, Romania)
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1. K. H. Leong, “Evolving laser processing,” Industrial Laser Solutions 19, 17–19 (2004)
2. Standards ISO 11146-1, 2, 3:2004-2005, “Lasers and laser related equipment – Test methods for laser beam widths, divergence angles and beam propagation ratios,” International Organization for Standardization, Geneva (2004, 2005).
3. G. Nemeş, J. Serna, “Laser beam characterization with use of second order moments: an overview,” OSA TOPS 17, 200–207 (1998).
4. G. Nemeş, J. A. Hoffnagle, “Optical system for variable resizing of round flat-top distributions,” Proc. SPIE 6290, 629008 (2006).
5. C. Fenic, L. Neagu, C. Viespe, Gh. Honciuc, and G. Nemeş, “Damage tests for 355 nm laser mirror by using a VariSpot® optical system,” Proc. SPIE 6606, 66060C (2007).