Lateral Displacement Beamsplitter

Lateral Displacement Beamsplitters output two parallel beams separated by a fixed distance. The beamsplitters consist of a precision rhomboid prism cemented to a precision right angle prism. Entrance and exit faces feature a multi-layer anti-reflection (AR) coating for increased efficiency. Polarizing and non-polarizing coatings are available.


Specifications

Material

BK7

Dimension Tolerance

±0.1mm

Clear Aperture

>90%

Flatness

λ/4 @ 632.8nm to λ/10 @ 632.8nm per 25mm

Angle Tolerance

±3 arc minutes to ±5 arc seconds

Exiting Beam Parallelism

3 arc minutes to 30 arc seconds

Surface Quality

60/40 or better

Single Wavelength

532, 632.8, 650, 808, 850, 980, 1064, 1310, 1550nm

Broadband

450-650, 650-900, 720-1080, 900-1200, 1200-1600nm

Non-Polarizing:

Non-Polarizing Coating

Absorption<10%,T/R:45%±5%,Polarization<6%

AR Coating

R<0.5% @ Broadband

Polarization:

Polarizing Coating

Tp>95%, Rs>99.5%; Extinction Ratio: >500:1

AR Coating

R<0.25%@Single Wavelength or R<0.5% @ Broadband




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