Beamsplitter cube
A beamsplitter cube is made by cementing two precision right-angle prisms with a suitable interference coating on the hypotenuse. Coating absorption is minimal, and average transmission and reflection are close to 50%, although outputs are partly polarized. For polarization-sensitive applications, choose a polarizing beamsplitter (PBS) or nonpolarizing beamsplitter (NPBS) cube.
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Overview
Specifications
| Parameter | Value |
|---|---|
| 材料 | N-BK7 or H-K9L Grade A Optical glass |
| 尺寸公差 | ±0.2mm |
| 面型 λ [@632.8 nm] | <λ/4@632.8 nm |
| 表面质量 | 60/40 |
| 平行度 | <1′ |
| 透射/反射比 (T/R) | 50/50 ±5%, for randomly polarized light;T = (Ts + Tp) /2, R = (Rs + Rp) /2 |
| 光束偏转 | <3′ |
| 镀膜 | Inclined surface:partially reflecting coating; all entrance and exit surfaces:antireflection coating |
| 标准镀膜波长 | Narrowband ：488、532、632.8、650、808、850、980、1064、1310、1550 nm Broadband ：450-650、650-900、900-1200、1200-1550、1500-1610 nm |
Datasheet
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Supplier Information
Related Products
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Polarization Beam splitter prism
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尺寸公差: ±0.2 mm 面型 λ [@632.8 nm]: λ/4 @ 632.8 nm 表面质量: 60/40
The polarizing beam-splitter prism divides incident unpolarized light into two orthogonal linearly polarized beams. P-polarized light is fully transmitted, while S-polarized light is reflected at 45°, emerging at 90° to the P beam. The prism consists of two cemented, high-precision right-angle prisms, with a dielectric polarizing beam-splitter coating on the hypotenuse of one prism.
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Non-polarizing beamsplitter prism （NPBS）
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材料 [标准精度]: BK7 Optical glass 材料 [高精度]: N-BK7 Optical glass 加工尺寸 [标准精度]: 2.5×2.5 to 100.0×100.0 mm
The nonpolarizing beamsplitter cube uses a multilayer interference coating on a right-angle prism hypotenuse, then cements two prisms into a cube. P and S components have similar splitting characteristics at specified wavelengths and reflection/transmission ratios while retaining their polarization states. Antireflection coatings cover the four external faces. Custom options include: (1) dimensions, (2) optical materials, (3) high-precision pentaprisms and (4) coating designs.
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The polarizing beam-splitter prism divides incident unpolarized light into two orthogonal linearly polarized beams. Beam-splitter prisms are widely used in laser and illumination systems. High-extinction PBS with TP:TS>1000:1 is suitable for broadband use, while TP:TS>3000:1 is suitable for narrowband use.
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材料: N-BK7 or H-K9L Grade A Optical glass 尺寸公差: ±0.2mm 厚度公差: ±0.2mm
Conventional beam splitters separate or combine laser beams, while polarizing beam splitters separate or combine two orthogonally polarized laser beams. Beam-splitter performance depends primarily on the coating specifications.
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