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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