A beam splitter is an optical device that splits a beam of light in two. It is the crucial part of most interferometers. In its most common form, it is a cube, made from two triangular glass prisms that are special coated and cemented together such that half of the light incident is reflected and the other half is transmitted. Another form is the use of a half mirror. This is a plate of glass with a thin coating such that, of light incident at a 45° angle, one half is transmitted and one half is reflected. Both of a metallic coating and dielectric coating may be used for this plate
specifications
| Dimension Tolerance | ±0.2mm |
|---|---|
| Surface Quality | 60/40 |
| Clear Aperture | >90% |
| Flatness(per 25mm@632.8nm) | λ/4 |
| Beam Deviation | <3 arc minutes |
| Chamfer | Protected <0.5mmx45° |
| Coating | Hypotenuse Face : Partial Reflection Coating All Input and Output Faces: AR Coating |
| T/R Tolerance | ±5%, T=(Ts+Tp)/2, R=(Rs+Rp)/2 |
| Damage Threshold | >500mJ/cm2, 20ns, 20Hz, @1064nm |
We offer several forms of beam Splitters applicable to a broad range of spectroscopy and commercial applications, including:
- Beam splitter Cube
- Beam splitter Plate
- Polarization Beam splitter Cube
- Non-polarizing Beam splitter Cube