MWIR Polarizer

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MWIR Polarizer

This polarizer is a wire grid on an antireflection coated silicon substrate optimized for 3 to 6 microns. The ring mounting provides for ease of handling and has the polarization transmission direction marked. The wire grid surface is quite delicate and should only be cleaned non-mechanically. Standard outer diameters are one and two inch but custom sizes, shapes and unmounted polarizers are also available.
Call your Meadowlark sales engineer with your polarization requirements today.

  • Excellent contrast ratio
  • Thin profile
  • High transmission
  • Custom apertures > 2 inches available

Specifications - MWIR Polarizer
Substrate Material Silicon, 0.7 mm thickness
AR Coating Doubled sided AR
Wavelength Range 3 µm to 6 µm
Contrast Ratio See graph
Acceptance Angle ≤ 20˚
Transmitted Wavefront Distortion
(per inch)
≤ 1.5 λ (P - V at 4 mm)
[≤ λ/3 (RMS at 4 mm)]
Beam Deviation ≤ 2 arc min
Maximum Aperture Up to 4 in. circular
Surface Quality 80-50 scratch-dig


Ordering Information - MWIR Polarizer
Clear Aperture
in. [mm]
in. [mm]
in. [mm]
Part Number
Custom wavelengths are available between 420-3000 nm.
Custom sizes and shapes are available.
Please contact our Sales Department to obtain a custom quote.


Learn More
White Paper:   Finding the Optimal Polarizer