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Polarizing Beamsplitter
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Description
A polarizing beamsplitter integrates beam splitting and polarization control in one precision element: within the design band it separates incident light according to polarization state into S- and P-polarized beams directed into different output paths. Using thin-film polarizer or polarizing prism structures it achieves controllable ratios (near 50:50 or e.g. 70:30), high extinction ratio (P dominates in transmission, S dominates in reflection) and wide working bands from UV through visible to near-IR, typically at 45° or 0° incidence. It is valuable wherever polarization and light path must be manipulated simultaneously: differential imaging/inspection, polarized fluorescence immunoassay, polarizing microscopy, interferometry, laser-cavity control and projection display (LCD/LCoS) polarization management.
Applications
- Fiber-optic modules: SFP/GBIC, FP/DFB, CWDM, PIN-TIA assemblies
- Biochemical analyzers and microscopes
- Laser power feedback monitoring (green laser modules)
- AOI automatic optical inspection and 3D image synthesis
- Stage laser lights and RGB beam combining
- Digital microscopy, fingerprint recognition and imaging
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