Reflective DOE (Diffractive Optical Element)
Reflective DOE (Diffractive Optical Element)

Beam Shaper for High Power Lasers over 10 kW


Reflective DOE (Diffractive Optical Element) Inquiry

What NTT-AT can offer:

  1. Applicable to high power lasers over 10 kW.​
  2. Customized design and fabrication according to each customers’ requirements: Design can be customized based on wavelength, incident beam shape and size and output beam shape. 
Beam Shaper1.png

Why Reflection type beam shaper is recommended for high power application:

Directly water cooled on its back side
Construct the designated beam shape even if the incident laser power exceeds 10 kW.
Unlike Transmission type DOEs, there is no beam distortion since there will be no accumulation of the light absorption

Beam Shaper2.png

Target Applications:

  • Laser cutting
  • Welding
  • Drilling
  • Patterning
  • Annealing
  • Ablation

SEM micrograph of the beam shaper surface

1μm pixel (8-step)

Spec examples

The following specifications are examples. NTT-AT will design and fabricate beam shapers according to the customers’ requirements. Please contact us.

 Item  Specifications (examples)
 Intensity Distribution Shape  Gaussian→Square(Top hat)
 Wavelength  1064nm
 Laser Power  ~10 kW*
 Incident Beam Diameter  30 mmφ
 Incident Angle  45°
 Cooling Wafer : approx. 1L/min  300W
 Size  40 mm x 40 mm x 0.5 mm
 Material  Si, SiC
 Light Collection Efficiency  Without lens : 70%
With lens : over 95%

Please contact us for other materials such as quartz and sapphire. 
Mount jig is also available as option.
For laser power over 10 kW, please contact us.


Reflection type DOEs (Diffractive Optical Element) Catalog  

Reflective DOE (Diffractive Optical Element) Inquiry
Share on Twitter Share on Facebook