Optical Materials for VIS Applications

Optical Fused Silica for VIS Applications

For applications in the visible wavelength range from 380 - 780 nm fused silica is used due to its higher absolute transmission compared to other optical materials and it's extreme radiation hardness compared to standard optical glasses. In extreme environments like high temperature, chemical contact and high mechanical stress fused silica shows its excellent properties.

Beam path in a retro reflector. Challenges: Backreflection in the same direction.
Beam path in a retro reflector. Challenges: Backreflection in the same direction.

Prisms, lenses and beam splitters are typically the most critical optical elements. The quality of these components contribute significantly to the performance of the entire optical system, since they influence the imaging performance by altering the optical path. In such optical elements the light path is not just in one direction, and therefore it is important that there is no optical distortion in any propagation direction. This makes an isotropic optical material with a homogenous refractive index distribution necessary. Heraeus Quarzglas has a unique process to provide real 3D materials with outstanding optical properties.
More information on 3D materials

Recommended Materials:
We recommend the following materials for their 3D homogeneity (indicated by +, ++, +++). To help with the selection, we indicate additional information. Never the less, feel free to contact our experts.

  • Suprasil® 311 (3D:+++)
  • Suprasil® 3301 (highest VUV transmission, 3D:+++)
  • Suprasil® 1 (good radiation hardness, low fluorescence, 3D:++)
  • Infrasil® 301 (natural quartz glass, 3D:++)
Fused silica ingot
Typical window out of fused silica

Optical components like windows, filters, polarizers or light guides require the light to pass through the functional direction with minimized distortions. Optics (mostly plano-plano) out of fused silica have an excellent homogeneity and can be used for a wide range of applications - not just as a transmissive window in harsh environments, also as base material for optical filters and polarizers.


Recommended Materials:
We recommend the following materials for their homogeneity in functional direction (indicated by +, ++, +++). To help with the selection, we indicate additional information. Never the less, feel free to contact our experts.

  • Suprasil® 312 (basic material, homogeneity: +++)
  • Suprasil® 3302 (improved VUV transmission, homogeneity: +++)
  • Suprasil® 2A (good radiation hardness and low fluorescence, homogeneity: ++)
  • Suprasil® 2B (good radiation hardness and low fluorescence, homogeneity: +)
  • Spectrosil® 2000 (low fluorescence, homogeneity:+) Data Sheet
  • Infrasil® 302 (natural quartz glass, homogeneity:++) Data Sheet
  • HOQ® 310 (natural quartz glass, homogeneity:+)

Mirrors, Wafers, Debris Shields and Substrates all rely on either the surface, or a very thin layer of material. Optical homogeneity is not the prime focus for these applications. Optical parameters like excellent transmission, very good coefficient of thermal expansion and other mechanical, thermal and chemical properties might be more important.

Recommended Materials:

  • Spectrosil® 2000 (good radiation hardness) Data Sheet
  • Suprasil® 313 (good homogeneity, low OH content) Data Sheet
  • Suprasil® 300 (OH < 1ppm, subject to export controll)
  • Suprasil® CG Data Sheet
  • HOQ® 310 (natural quartz glass)
Fused silica lens and blank
Customer tailored optical components

Todays optical components are by far no standard optics anymore. Driven by the complexity of the applications in industry and science, specifications are much tighter, dimensions can be very imaginative, and sizes can go up to 1,5m. Heraeus Quarzglas was involved in a lot of projects, where a customer tailored optical component was required. Our long term R&D expertise enables us to support you in every unusual, special optics request.

Please contact us directly to discuss you problem and find a solution.

to top