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Dammann Gratings DG25-1702-532
DG25-1702-532$1,040.18
In Stock· Ships in 5.0 weeks
Key Specifications
Wavelength
532.0nm
Reflectance
0.5%
Transmittance
400.0%
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The LBTek Dammann Grating (DG) is fabricated based on liquid crystal polymer birefringent material and N-BK7 glass substrate, presenting a sandwich structure of front and rear glass substrates plus LCP functional layer with no housing and a single cutting edge.
The device features a binary periodic variation of liquid crystal molecule orientations with half-wave retardation across the entire plane. The grating surface consists of position-encoded binary phase structures capable of splitting laser beams into multiple equal-intensity beams, offering advantages in flat-plate design, high diffraction efficiency, and superior beam-splitting ratios.
Key Features
- Linearly polarized light incidence enabling one-dimensional uniform beam splitting
- Planar structure with high splitting ratio and high diffraction efficiency
- Operating wavelengths: 532 nm and 1064 nm
- Splitting mode: 1x7 with standard grating period of 90 um
- Liquid crystal polymer / N-BK7 sandwich flat-plate structure
| Component Material | Liquid Crystal Polymer/N-BK7 Window Plate |
| Component size | Ø25.4×3.2 mm, D-type 1.5 mm cutting edge |
| Operating Wavelength | 532 nm |
| Clear Aperture | 15×15 mm |
| Surface Quality (Scratch/Dig) | 60/40 |
| AR Coating | 400-700 nm |
| Operating Temperature | -20~80 ℃ |
| Diffraction Efficiency | >97 % |
| Retardance Wavelength Tolerance | ±5 nm |
| Beam splitting mode | 1×7 |
| Beam splitting angle error (full angle) | ±1 % |
| Diffraction efficiency | >75 % |
| Beam splitting uniformity | >85 % |
| Maximum Beam Splitting Angle (Full Angle) | 2 ° |
| AR Coating Reflectance | Ravg<0.5% (0° incidence) |
CAD Drawing
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Curve 1
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Curve - Uniformity
Product Family: Dammann Gratings (2 variants)
| Product | SKU | Size | Clear Aperture | Operating Wavelength | |
|---|---|---|---|---|---|
| Dammann Gratings DG25-1704-1064 |
DG25-1704-1064
| — | — | — | View |
| Dammann Gratings DG25-1702-532 Current |
DG25-1702-532
| — | — | — |