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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

20mm 50R/50T NIR Cube Beamsplitter

Stock #14-642 3-4 days
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Beam Deviation (arcmin):
Protective bevel as needed
λ/4 MgF2 @ 900nm on Faces
Multilayer Dielectric on Hypotenuse
Dimensions (mm):
20.0 x 20.0 x 20.0 ±0.10
Reflection/Transmission Ratio (R/T):
Reflection/Transmission Tolerance (%):
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
Standard Beamsplitter
Wavelength Range (nm):
700 - 1100
Power (fringes) @ 632.8nm:
Irregularity (fringes) @ 632.8nm:

Regulatory Compliance

RoHS 2015:
Reach 223:
Certificate of Conformance:

Product Family Description

  • Multi-Layer Dielectric Coating
  • Available in 30/70, 70/30, or 50/50 Split Ratios
  • Optimal for Applications Insensitive to Polarization

TECHSPEC® Cube Beamsplitters are constructed by cementing two right angle prisms together and are offered in a range of reflection/transmission ratios. Output is partially polarized, making this product suitable for illumination and other applications where polarization is not a concern.  TECHSPEC® Cube Beamsplitters feature an interference coating which is applied to the hypotenuse surface of one of the prisms to provide the designated reflection/transmission ratio with minimal absorption loss. 

Note: If polarization sensitivity is critical to your application, we recommend using TECHSPEC® Polarizing Beamsplitters or TECHSPEC® Non-Polarizing Beamsplitters.