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Beamsplitter plates are primarily used to split or re-combine a beam of light, especially in high power lasers. When using beamsplitter plates the two partial beams travel different optical paths. The optical paths depend on the incident angle and the thickness of the plates. The beam can be shifted.
Features:
- Virtually zero absorption for true 50/50 beamsplitters
- Designed for 45° angle of incidence with random polarization
- AR coated back surface eliminates ghosting
Beamsplitter Plate Specifications:
|
Material |
N-BK7 grade A |
|
T/R |
50/50±5% for random polarization T=(Ts+Tp)/2, R=(Rs+Rp)/2 |
|
Clear Aperture |
Central diameter, >90% of dimension |
|
Surface Flatness |
< λ/4@632.8nm |
|
Surface Quality |
60-40 scratch-dig |
|
Dimensions Tolerance |
±0.2 mm |
|
Thickness Tolerance |
±0.2 mm |
|
Coating on Surface 1 |
Beamsplitter Coating at 45° AOI |
|
Coating on Surface 2 |
AR Coating at 45° AOI |
|
Standard Wavelength |
Narrow Band: 488nm, 532nm, 632.8nm, 650nm, 808nm, 850nm, 980nm, 1064nm, 1310nm, 1550nm |
|
Broadband：450-650nm, 650-900nm, 900-1200nm, 1200-1550nm, 1550-1610nm |
|
|
Standard Dimension |
10x10x2mm, 12.7x12.7x2mm, 25.4x25.4x2mm, ф25.4x2mm, 12.7x12.7x3mm, 25.4x25.4x3mm, ф25.4x3mm, 50.8x50.8x3mm |