Rocky Mountain Instrument Co.
1.303.664.5000
 

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Non-Polarizers » Cube Beamsplitters

Non-Polarizing Cube Beamsplitters are formed from two right angle, 45° prisms permanently cemented together. They are designed for applications in which it is necessary to maintain the polarization characteristics of the incident beam.

The hypotenuse is coated with an all dielectric, non-polarizing, partial reflection coating. An incident, unpolarized, monochromatic beam is divided into reflected and transmitted components with the specified intensity ratio.

All entrance and exit surfaces are coated with a high efficiency, narrowband, anti-reflection coating.

 
 
 
non-polarizing-cube-beamsplitter
 
 
RMI Standard Specifications
Materials:
BK7, UVFS, FS
Angle of Incidence: 0° or 45°
Surface Figure:
BK7, UVFS. FS:
All polished surfaces:
λ/10 at 633 nm
Surface Quality:
BK7, UVFS, FS:
All polished surfaces:
10-5
Diameter Tolerance: + 0.000", – 0.010"
Thickness Tolerance: ± 0.010"
Wedge: ≤ 3 arc minutes
Bevels: 0.010" – 0.030" at 45º
Clear Aperture: Central 85% of diameter
Reflectance:
248nm – 400nm:
 
 
400nm – 2μm:
 
 
10% ≤ R ≤ 90% ± 5%
|Rs - Rp| ≤ 5%
 
10% ≤ R ≤ 90% ± 3%
|Rs - Rp| ≤ 3%
Anti-Reflection Coating:
Unpolarized:
R ≤ 0.5% at 45º