Beamsplitters are plate windows coated with a dielectric coating to separate laser light into your choice of reflection/transmission split ratio. Beamsplitters exhibit almost no absorption and are designed specifically for 45 deg. at the wavelength and polarization being used. Standard substrates have an anti-reflection coating on the second surface.
Specification:
| Substrate material: |
KU-1, K8 |
| Surface figure @ 633nm: |
l/10 |
| Surface quality, scr/dig: |
20/10 |
| Clear aperture: |
exceeds central 85% of dimension |
| Dimensional tolerance, mm: |
+0/–0.25 |
| Thickness tolerance, mm: |
±0.25 |
| Wedge, arc.min |
<=5 |
| Coating: |
dielectric; user specified |
| Damage threshold, J/cm2: |
2-5, depending on coating spec. |
|
Here is an example of the beamsplitter coating:
Fig. 1 K8 dichroic beamsplitter; T>=95% @ 532nm, P-polarisation; T>=99.5% @ 1064nm, S-polarisation, AOI=Oº.
For quotation and delivery please fill in our request form.
