Non-polarizing Beamsplitter Cube consists of a pair of precision high tolerance right angle prisms cemented together with a dielectric coating on the hypotenuse of one of the prisms. The low polarization dependence of the dielectric coating allows the transmission and reflection for S- and P- polarization states to be within 5% of each other. This means that they will not change the state of polarization of the incident beam.
DELN offer both broadband and single wavelength non-polarizing cube beamsplitters (NPBS). An antireflective coating has beem applied to each face of the beamsplitter in order to produce maximum transmission efficiency for the appropriate wavelength range.
Specifications
|
Material |
BK7 |
|
Dimension Tolerance |
±0.1mm |
|
Clear Aperture |
>90% |
|
Flatness |
λ/4 @ 632.8nm to λ/10 @ 632.8nm per 25mm |
|
Beam Deviation |
±3 arc minutes to ±5 arc seconds |
|
Surface Quality |
60/40 or better |
|
Absorption |
<10% |
|
Transmission |
45%±5% |
|
Polarization |
<6% |
|
Coating |
Non-polarizing beamsplitter coating on hypotenuse face |
|
Single Wavelength |
632.8, 650, 808, 850, 980, 1064, 1310, 1550nm |
|
Broadband |
450-650, 650-900, 720-1080, 900-1200, 1200-1600nm |
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