Fused Silica windows and lenses

Alkor Technologies - manufacturer of Fused Silica optical components.

• Fused Silica windows up to 250mm diameter;
  
• Fused Silica lenses with any desired focal length;
  
• Fused Silica prisms and wedges.
  
• custom Fused Silica optics with AR or HR coatings.

Fused Silica is available in UV and IR grades for different applications:

1. KU-1 - Ultraviolet grade (UV) Fused Silica (SiO2)

   KU-1 - UV Fused Silica has high transparency within ultraviolet and visible regions. It has no absorption bands within 170-250 nm wavelength interval. It has an intensive OH-absorption band at 2600-2800nm wavelength range. This grade does not express fluorescence as a result of UV excitation, and is characterized by optical-radiation stability. It is practically free from bubbles and inclusions.
   The nearest analogues of quartz glass KU-1 are:
   Suprasil Standard (Heraeus), Spectrosil A and B (Saint-Gobain), Corning 7940 (Corning), Dynasil 1100 and 4100 (Dynasil).
   KU-1 Windows are in UV grade Fused Silica material and usable down to 170nm.
   Maximum dimensions: Dia 300x100mm. Contact us for further information.

   

   KU-1 Fused Silica Transmission (10 mm thickness, reflective losses included)

2. KI - Infrared grade Fused Silica (low OH, water free)

   KI - IR Fused Silica features high transparency within visible and infrared regions. It has no OH-absorption bands within 2600-2800 nm wavelength interval. Extremely low bubble and inclusion content (0.3 defects/100cm3 of defects larger than 200 microns), low-OH (<50ppm OH), low cost.
   Infrared fused silica windows with low "OH" content can be used for applications requiring IR transmission to about 2900-3500nm. IR Fused Silica windows and mirrors by Alkor works in European gas analyzers and gas detectors.
   Maximum dimensions: Dia400x250mm. Contact us for furhter information.

   

   KI IR Fused Silica Transmission (10 mm thickness, reflective losses included)

3. KS-4V - full spectrum grade Fused Silica

   KS-4V combines excellent physical properties with outstanding optical characteristics. It has no absorption bands within 170-250 nm wavelength range as well as no OH-absorption at around 2600-2800 nm. It is practically free from bubbles and inclusions.
   At near IR range the nearest analogue of quartz glass KS-4V is Infrasil (Heraeus).
   Maximum dimensions: 260mm Diameter. Contact us for further information.

    

   KS-4V Full spectrum Fused Silica transmission (10 mm thickness, reflective losses included)