Beamsplitter Cubes

Beamsplitters are used to split or combine beams of light. Plates are used for most laser applications as they exhibit low absorption. Cubes are a convenient, protected form for low power applications. The performance of a beamsplitter is mainly dependent on the coating specifications. For the coating curves for each type of beamsplitter, please refer to Coatings.

 

Feature

• Identical path lengths for both the reflected and the transmitted beams
• The transmitted beam is neither display nor deflected
• Stable and compact
• Easy operation
• Easy to mount / align

Capabilities

ATTRIBUTE	SPECIFICATIONS
material	N-BK7 or Specified
DIAMETER TOLERANCE	+0.1, -0.1mm
flatness	Per 25.4mm λ/4 @ 632.8nm
CLEAR APERTURE	>90%
SURFACE QUALITY	40/20 scratch and dig
beam deviation	<3 arc minutes
T/r	T=(Ts+Tp)/2, R=(Rs+Rp)/2 T/R=50/50 or based on design ±5% @ λ
COATING	BS coating on hypotenuse surface, and with AR coating on outside surfaces