Silicon
The most important facts about our silicon
Purity
> 99.999
%
enables an almost unchanged beam path
Size up to:
450
mm
Thermal conductivity 𝝀 =
150
@ 20 °C [W/(m*K)]
High-tech for infrared: Our CNC production of silicon components
While we grow our own germanium crystals, we work with selected, first-class suppliers for silicon. This high-quality silicon forms the basis for our CNC-controlled production processes.
In our high-tech facility, we transform silicon blanks into precise infrared optics – from prototypes to large-scale production. State-of-the-art CNC machines, controlled by experienced experts, guarantee unrivalled accuracy and repeatability.
We are more than just a manufacturer. We are a reliable and flexible partner that helps our customers achieve their production goals:
- Short lead times: We respond quickly to your requirements.
- Kanban support: We deliver exactly when you need it.
- Near-net-shape blanks: We minimise your processing effort and save costs.
Our global customers – market leaders in defence, security, healthcare, automotive, laser technology and more – rely on our expertise.
IV IR Optics silicon crystals: Customised blanks for your optical challenges.
Silicon (Si) products for your growth in infrared optics:
- Window blanks
- Mirror blanks
- Filter blanks
- Beam splitter blanks
- Lentil blanks
- Dome blanks
- Rods and discs
- Sputtering targets
- Vaporisation granules
- Dislocation-free crystals
Silicon in optical quality / blanks for infrared optics
| Feature | Value | Remark |
|---|---|---|
| Crystal structure | Monocrystalline | d |
| Purity | > 99.999 % | d |
| Alignment | <100>, <111> | d |
| Conductivity | N-type (phosphorus-doped) P-type (boron-doped) | d |
| Specific resistance | Standard optical quality: N-type > 10 Ωcm P-type > 30 Ωcm EXPT class: 50 Ωcm Mirror quality 1 – 10 Ωcm | d |
Your advantages with semi-finished products from Hellma Materials:
Flexibility in material size: Customised solutions for your specific requirements.
Optimised performance: Achieve maximum optical precision and efficiency.
Reliability: Trust in a proven material with a long service life.
Quality control: All measurement technology including laser laboratory in-house.
