The “Top-Hat” or “Flat-Top” beam shapers are diffractive optical elements (DOEs) used to transform a near-gaussian incident laser beam into a uniform-intensity (flat) spot of either round, rectangular, square, line or other shape with sharp edges in a specific work plane.
A uniform spot achieved by the top-hat beam shaper enables equal treatment to a surface, preventing over or under-exposure of specific areas. The beam shaper creates a well defined spot, with a flat-top profile, characterized by a sharp transition region that creates a clear border between treated and untreated areas.
Below is a list of our top-hat beam shaper DOEs, which gives flat uniform intensity distribution at infinity or focal length of an aberration free customer’s lens.
Typical applications for top-hat (flat-top) beam shapers include: Laser Ablation, Laser Welding, Laser perforation, Laser Scribing, Medical and aesthetic laser applications. Read more about Top-Hat Beam Shapers applications.
For Multimode laser, we generally recommend to use our Beam homogenizer product line. Click here for more information on Beam Homogenizer.
MATERIALS | Fused Silica, ZnSe, Plastic |
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WAVELENGTH RANGE | 193nm to 10.6um |
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DOE DESIGN | 2-level (binary) to 16-level |
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DIFFRACTION EFFICIENCY | very small (about 1.5 times Diffraction Limit) |
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ELEMENT SIZE | 86% - 98% |
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COATING (OPTIONAL) | AR/AR Coating |
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CUSTOM DESIGN | Almost any arbitrary shape |
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