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Suprasil / Infrasil

Windows and lenses

suitable from UV to NIR

precision mirrors

scanner and deflection mirror

Coatings

Antireflection, filter, HR

Quartz glasses for precision optics

The quartz glasses Infrasil and Suparsil combine excellent physical and optical properties. While Suprasil quartz is produced by flame hydrolysis, Infrasil is natural quartz glass. Lenses, windows and filters made from Infrasil or Suprasil are the optimal choice for all precision applications. 

Suprasil

Quartz glasses produced by flame hydrolysis of SiCl4 combine excellent physical and optical properties. High purity synthetic quartz has excellent optical properties from UV to NIR range.

  • Bubbles and inclusions according to DIN 58927: 0
  • Bubbles and inclusions according to DIN ISO 10110: 1/1*0,08
  • TBCS: < 0,015
  • Degree of streaking according to DIN ISO 10110: 2/ ;-5
  • Refractive index @ 532 nm: 1,4607
  • Refractive index @ 632,8 nm: 1,4570
  • Refractive index @ 1064 nm: 1,4496
  • 3D material, optically isotropic
  • Flourescence: free (Hg lamp 254 nm)
  • Synthetic Quartz

Infrasil

Optical quartz glasses are mostly used for applications from the VIS to the NIR range. In addition, synthetically produced quartz glasses are the most cost-effective alternative to Suprasil. The glass types Infrasil 301, 302 and 303, fused from natural raw material, are especially suitable for IR applications.

  • Bubbles and inclusions according to DIN 58927: 0
  • Bubbles and inclusions according to DIN ISO 10110: 1/1*0,16
  • TBCS: < 0,03
  • Degree of streaking according to DIN ISO 10110: 2/ -;5
  • Refractive index @ 532 nm: 1,4608
  • Refractive index @ 632,8 nm: 1,4571
  • Refractive index @ 1064 nm: 1,4497
  • Flourescence: blue violet (Hg lamp 254 nm)
  • Natural Quartz. The chemical composition and thus the optical properties may vary in natural quartz.

Applications

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

  • Suprasil: prisms, beam splitters, UV windows, mirrors
  • Infrasil: prisms, IR lenses, IR windows, mirrors
  • Mirrors and windows for laser diodes
  • Mirrors and windows for Nd:YAG laser
  • Lenses, prisms and filters for NIR
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Suprasil

Coatings

With optical coating optics are optimized for your application.

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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.
Filters
Filter coatings were designed for their application. We distinguish between band-pass filters, short-pass and long-pass filters as well as beam splitters and cold mirrors. Please feel free to contact us on this topic.
Gold with protection
A gold protective coating is ideal for all applications in the infrared range. Including a protective oxide coating, the optics can be easily cleaned and prevent damage to the surface. This coating provides a reflection of R(avg) > 98 % in the iR from 1 - 20 µm.
Data sheet
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.
Data sheet
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.
Data sheet
  • Density 2,20 g/cm³
  • Mohs-Hardness 5,5-6,5
  • Knoop-hardness 5800-6200 N/mm²
  • Poisson’s ratio 0,17
  • Speed of sound 5720 m/s

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Please feel free to contact us!

+49 2324 398-401
info@pleiger-laseroptik.de