Optical Beam Splitter Cube
This optical beam splitter cube divides a beam of light into two separate beams. The coating minimizes absorption loss, achieving approximately 50% transmission and 50% reflection.





Technical Specifications
Overview
High-Precision Optical Beam Splitter Cube
This beam splitter cube is engineered for professional optical systems, offering identical path lengths for both reflected and transmitted beams. Unlike standard plates, this compact cube ensures the transmitted beam is neither displaced nor deflected, making it exceptionally easy to mount and align. It is an ideal solution for interferometers, laser systems, and high-accuracy optical instruments.
Key Advantages
Key Benefits
- Identical path lengths for reflected and transmitted beams
- Zero beam displacement or deflection
- Stable and compact design
- Simplified operation and alignment
- Easy to mount in optical setups
Optical Performance
Splitting Ratio (T/R)
- Angle Tolerance
- 3 arc minutes
- Surface Flatness
- lambda/4 per 25mm @632.8nm
- Natural Light Calculation
- T=(Ts+Tp)/2, R=(Rs+Rp)/2
Material & Quality
Substrate Material
- Surface Quality
- 60-40 scratch and dig
- Dimension Tolerance
- +/-0.2mm
Coatings
Coating Specifications
| Surface | Coating Type |
|---|---|
| Hypotenuse Face | Broadband partial reflectance |
| Input/Output Faces | BBAR-coatings (Broadband Anti-Reflection) |


