19 February 2009 ZnSe aspherical microlens systems enable new beam shaping approaches for CO2-lasers
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Abstract
When it comes to highest power laser applications CO2-lasers are one of the most prominent choices. In most applications the raw laser beam which exhibits a Gaussian or Gaussian-like shape is employed. In contrast, homogeneous top hat profiles or customized beam shapes offer several application-specific advantages. Up to now the possibilities of beam shaping for CO2-lasers were very limited based on traditional approaches only. To make the advantages of homogeneous beam profiles also accessible for CO2 sources LIMO has expanded its range of production capabilities for the manufacturing of ZnSe micro-optics. LIMO's proprietary production technology is based on computer-aided design and no etching technique is involved at all. A Gaussian-to-top-hat converter made of ZnSe is demonstrated. The properties of the micro-lens surface, the generated beam profile with a CO2-laser as well as first application results are shown.
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O. Homburg, O. Homburg, B. Guetlich, B. Guetlich, F. Toennissen, F. Toennissen, T. Mitra, T. Mitra, L. Aschke, L. Aschke, } "ZnSe aspherical microlens systems enable new beam shaping approaches for CO2-lasers", Proc. SPIE 7196, High Energy/Average Power Lasers and Intense Beam Applications III, 71960B (19 February 2009); doi: 10.1117/12.808164; https://doi.org/10.1117/12.808164
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