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Non-Polarizing Beamsplitter Cubes

Non-Polarizing Beamsplitter CubeNon-polarizing cube beamsplitters divide a single wavelength into nearly equal reflected and transmitted beams. The beamsplitter consists of a pair of precision right-angle prisms carefully cemented together to minimize wavefront distortion. The hypotenuse of one of the prisms is coated with a metal-dielectric hybrid beamsplitter coating optimized over a broad wavelength range. The four faces are antireflection coated with a broadband multilayer dielectric coating to minimize surface reflection losses over the wavelength range.


Features:

- Low Polarization Dependance Coating

- Constructed from High Tolerance Right Angle Prisms

- BBAR Coated Faces for Maximum Efficiency

- Even split of laser power


Non-Polarizing Beamsplitter Cube Specifications:

  

Material

N-BK7 grade A

Transmission

45%±5%

Absorption

< 10%

Polarization

< 6%

Clear Aperture

Central diameter, >90% of dimension

Wavefront Distortion

< λ/4@632.8nm

Surface Quality

40-20 scratch-dig

Transmitted Beam Deviation

≤ 5 arc min

Reflected Beam Deviation

90° ±5 arc min

Dimensions Tolerance

± 0.10 mm

Antireflection Coating

Broadband, Multilayer coating, R <0.5%

 

Non-Polarizing Beamsplitter Cube Standard Products:

 

    Cube Size

450-700nm

700-1000nm

1300-1600nm

5 mm  

NBS051

NBS052

NBS053

10 mm  

NBS101

NBS102

NBS103

12.7 mm  

NBS121

NBS122

NBS123

20 mm  

NBS201

NBS202

NBS203

25.4 mm  

NBS251

NBS252

NBS253

30 mm  

NBS301

NBS302

NBS303

40 mm  

NBS401

NBS402

NBS403

50.8 mm  

NBS501

NBS502

NBS503