ALKOR Technologies - your CRYSTAL optics supplier.   ALKOR Technologies - your CRYSTAL optics supplier.
ALKOR Technologies - your CRYSTAL optics supplier.
Materials>>Sapphire>> Sapphire windows catalog

Sapphire windows. Custom sapphire optical windows.

  • Features Extreme Surface Hardness and Chemical Resistance
  • Transmits Wavelength Ranging from UV to Mid-IR
  • Thinner and Stronger than Standard Glass windows

Alkor Technologies - manufacturer of sapphire windows according to customer demands. Sapphire windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration.

Sapphire windows resistant to attack by strong acids due to its high dielectric constant. It has high compressive strength and a high melting point. It is also resistant to UV radiation darkening.

Our sapphire windows are not coated, but a single layer coating of MgF2 on each surface of the window increases the single surface transmittance to 99% throughout the entire visible spectral region.

Sapphire windows are provided in random or C-cut axis orientation and its birefringent nature could affect the polarization state of your application. We can also produce A/M/R plane orientation blanks up to 260mm diameter.

Contact our sales team for pricing and we will answer within 12 hours.

Sapphire windows

Cat# Dia, in Dia,mm TH, in TH, mm
AL-W-6.0-0.2 0.236 6 0.0078 0.2
AL-W-12.7-0.5 0.5 12.7 0.039 1.0
AL-W-12.7-1 0.5 12.7 0.079 2.0
AL-W-16x0.75 0.63 16.0 0.029 0.75
AL-W-25.4-1 1 25.4 0.039 1.0
AL-W-25.4-2 1 25.4 0.079 2.0
AL-W-25.4-3 1 25.4 0.118 3.0
AL-W-31.8x1 1.25 31.8 0.039 1.0
AL-W-38.1-3 1.5 38.1 0.118 3.0
AL-W-50.8-3 2 50.8 0.118 3.0
AL-W-50.8-4 2 50.8 0.157 4.0
AL-W-50.8-5 2 50.8 0.197 5.0
AL-W-50.8-6 2 50.8 0.236 6.0
AL-W-63.5-3 2.5 63.5 0.118 3.0
AL-W-63.5-6 2.5 63.5 0.236 6.0
AL-W-76.2-3 3 76.2 0.0.118 3.0
AL-W-76.2-6 3 76.2 0.236 6.0
AL-W-90-3 3.54 90 0.118 3.0
AL-W-90-6 3.54 90 0.236 6.0
Any custom size and shape up to Dia 270mm are available upon request. Square sapphire windows are available upon request.

Sapphire window standard specifications:
Diameter tolerance: +0/-0.1mm;
Thickness tolerance: +/-0.1mm;
Clear Aperture: 90%;
Parallelism: 3 arc min;
Flatness: 2 waves per inch at 633 nm
Surface finish: S/D 60/40

Sapphire windows are suitable for applications in the IR band and is often used as a IR viewport window for thermography. We provide a large variety of Sapphire windows for vacuum viewports.

Sensors and Detectors

Sapphire UV and IR transmission properties in combination with ability to withstand harsh chemicals, high pressures and temperatures offer strong advantages for Fire and IR Detectors, protective windows for remote sensors and optics for harsh environments such oil well drilling, chemical processing and other industrial processes.

Any other shape and size are also available:

Rectangle sapphire window square sapphire window Sapphire wedged window