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25mm Dia. Ge, IR Holographic Wire Grid Polarizer

25mm Dia. Ge, IR Holographic Wire Grid Polarizer, #62-776

Stock #62-776 In Stock
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Angle of Incidence (°):
Clear Aperture CA (mm):
Diameter (mm):
Extinction Ratio:
300:1 @ 10.6µm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Germanium (Ge)
Operating Temperature (°C):
-20 to 75
Notches on polarizer ring are aligned with wires of wire grid
Thickness (mm):
Transmission (%):
Linear Polarizer
Parallelism (arcmin):
Dimensional Tolerance (mm):
Wire Grid
Groove Parallelism to Edge (°):
Mount Thickness (mm):
Notches on polarizer ring are aligned with wires of wire grid (max. reflection)
Ring Thickness (mm):
Wavelength Range (nm):
8000 - 17000
Surface Flatness (P-V):
λ/20 @ 10.6 μm
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
50 W/cm2
Black Anodized Aluminum
Groove Density (grooves/mm):
Mount Thickness Tolerance (mm):

Regulatory Compliance

Reach 219:
Certificate of Conformance:

Product Family Description

  • Designed for Wavelengths Ranging from 2 - 30μm
  • Various Substrates Available
  • 360° Rotation Using Metric Polarizer Mounts

Infrared (IR) Wire Grid Polarizers are used to polarize light from unpolarized infrared laser sources, as well as attenuate light from polarized ones. When two wire grid polarizers are used together, high extinction ratios greater than 40,000:1 can be achieved. The polarization axis of each polarizer is marked by two white lines etched into the surface of its protective ring. Infrared (IR) Wire Grid Polarizers are used in a variety of medical imaging, aerospace, FTIR spectrophotometry, and analytical instrumentation applications.

Infrared (IR) Wire Grid Polarizers are manufactured by a special holographic technique that creates sub-micron wire grid spacing. Compared to conventional ruled wire grid methods, the holographic method creates finer groove spacing which optimizes short wavelength performance. We offer holographic wire grid polarizers of Barium Fluoride (BaF2), Zinc Selenide (ZnSe), Thallium Bromoiodide (KRS-5), and Germanium (Ge). 

Note: Special care should be taken when handling KRS-5 and Zinc Selenide as they are toxic materials. Always wear rubber or plastic gloves to avoid risk of contamination. The active wire-grid surface of the polarizer is extremely delicate and nothing should be allowed to touch it, as this can damage the optic. Only dry air is recommended as a cleaning method. If necessary, this optic should be handled by the edges only and with protected fingers.