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| Code | 670119 | Type | Variable Polarizing Beamsplitter | |
| Optical Material | Quartz & MgF₂ + N-SF1 | Clear Aperture | 10.0mm | |
| Operating Wavelength | 900-1100nm | Coatings | AR Coating, Beamsplitter Coating | |
| Extinction Ratio (Tp:Ts) | >1000:1 | Retardation Accuracy | ±λ/50 | |
| Surface Quality (Scratch/Dig) | 40/20 | Output Angle | 0° ± 5 arcmin |
Design Wavelengths: 420–680 nm, 700–1000 nm, 900–1100 nm, 1200–1600 nm
Extinction Ratio (Tp:Ts): >1000:1
Coatings: AR coatings on all four optical surfaces, Rabs < 0.5% @ design wavelength
The LBTEK broadband variable polarizing beamsplitter integrates an achromatic half-wave plate (mounted in an RM05 rotation mount) with a broadband polarizing beamsplitter cube (mounted in a 30 mm cage cube).
A top index mark indicates the beam path orientation. The fast axis of the half-wave plate is factory-aligned with the 0° index mark on the rotation mount and locked in its initial position so that the incident polarization remains unchanged. By loosening the lock with the included spanner wrench, the half-wave plate can be rotated, allowing continuous adjustment of the transmitted intensity of linearly polarized light.
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