Fused Silica windows and lenses

Alkor Technologies - manufacturer of Fused Silica optical components.
We supply the following Fused Silica optics:
- 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.
Please send us your specifications, we will quote it for you within 24 hours.

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 Fused Silica Windows are in UV grade material and usable down to 170nm.
Maximum dimensions: Dia 300x100mm. Contact us for further information.

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.