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Suprasil / Infrasil

Suprasil / Infrasil for NIR applications

Very low absorption values

Maximum reflection

Own development department

Optiken Suprasil / Infrasil

Synthetic quartz with excellent optical properties from UV to NIR.

  • Application range: 200 – 3500 nm
  • lowest absorption

Infrasil glasses

Synthetic quartz with excellent optical properties from UV to NIR.

  • Application range: 270 – 3500 nm
  • Lenses, windows and prisms


Infrasil and Suprasil glasses for applications where low absorption and optical performance are required.

  • Mirrors and windows for laser diodes
  • Mirrors and windows for Nd:YAG lasers
  • Lenses, prisms and filters for the NIR


With optical coating optics are optimized for your application.

Gold with protection
Ideal coating for all infrared applications. Includes protective oxide coating for easy cleaning and prevention of damage. This coating provides a reflection R(avg) > 98% in the IR from 1 - 20 µm.
Silver with protection
Silver with protection coated mirrors provide the highest reflectance of any metal from the visible to infrared spectral range. Including a protective oxide layer for easy cleaning and protection from oxidation, they are ideal for all broadband applications. Despite the protective coating, we recommend use in low humidity conditions to prevent tarnishing.
Aluminum with protection
A coating of aluminum with protection provides sufficient reflection for many optical systems. Including a protective layer, it can be easily cleaned and it is protected from oxidation. Aluminum with protection provides a reflectance of R(avg) > 91% in the visible/NIR range of 0.4 - 2.0 µm and R(avg) > 94% in the range of 2- 20 µm.
Anti-reflective coatings
Uncoated N-BK7 lenses and windows reflect 4% of visible light on each side. Including an anti-reflective coating on both sides significantly increases performance and minimizes unwanted ghosting. AR coating we manufacture broadband or for one laser wavelength on request. Please contact us.
Rhodium / Platinum / Chrome
Rhodium or platinum coatings are used when extreme oxidation resistance is required. For example, most dental mirrors are rhodium coated. Both metals are also used as barrier coatings to prevent intermetallic diffusion. Chromium coatings are used as metallic neutral density filters as well as for the manufacture of calibration discs.

Do you need
Gold or silver mirror?

Here you can find our overview of optical mirrors

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