Reflective DOE (Diffractive Optical Element）
Beam Shaper for High Power Lasers over 10 kW
What NTT-AT can offer:
- Applicable to high power lasers over 10 kW.
- 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.
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.
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Unlike Transmission type DOEs, there is no beam distortion since there will be no accumulation of the light absorption
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.
Catalog
| Reflection type DOEs (Diffractive Optical Element） Catalog | Download |
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