High-Power Ring-Shaping DOE

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Product Description
  • UV-Grade Fused Silica Substrate for High-Power Laser Applications
  • Generates Annular Beams
  • Design Wavelength: 1080 nm
  • Ring Inner and Outer Diameters Fully Customizable
LBTEK High-Power Ring-Shaping DOE is a beam-shaping element based on an axicon-like phase design, in which a specific phase profile is etched into the surface of a fused silica substrate. Operating on diffractive optical principles, it converts the energy distribution of a Gaussian beam into that of an annular beam. Compared with liquid crystal polymers, UV-grade fused silica offers low absorption and a high damage threshold. Owing to its freely designable ring inner and outer diameters and its highly uniform energy distribution along the ring, the high-power ring-shaping DOE holds great application potential in 3D printing, laser welding, and laser drilling. The high-power ring-shaping DOE is typically used together with a focusing lens for focus-type beam shaping; the standard product is designed for a focal length of f = 650 mm at an operating wavelength of 1080 nm. In addition to standard products, LBTEK provides flexible customization of specifications. For specific customization requirements, please contact LBTEK Technical Support.
Attributes
Component MaterialUVFS
Operating Wavelength1080 nm
Effective Focal Length (EFL)650 mm
Surface Quality (Scratch/Dig)60/40
High-Power Ring-Shaping DOE, 1080 nm
  • Operating Wavelength: 1080 nm
  • Gaussian-to-Annular Energy Conversion
  • Pure UV-Grade Fused Silica with High Damage Threshold

LBTEK High-Power Ring-Shaping DOE is fabricated from UV-grade fused silica using a surface-relief process and shapes an incident TEM₀₀ Gaussian beam into an annular spot. The product is supplied as a bare optic; a compatible mechanical housing is available as an option. The standard product is designed for use with a 650 mm focusing lens. In practice, focusing lenses of other focal lengths can also be used, and the annular spot size scales linearly with the focal length.

High-Power Ring-Shaping DOE: Ring-Shaping Performance

Product Model
Operating Wavelength
Effective Focal Length (EFL)
Outer diameter of the ring-shaped light spot
Inner diameter of the ring-shaped light spot
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Lead Time
DOE25Q-1080-RI1-14 1080 nm650 mm130 μm8.8 μm
$2,137.996 weeks
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