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FTIR Wire Grid Polarizers

FTIR Wire Grid Polarizers


  • Wavelength range: 5000 cm-1 to 285 cm-1
  • CaF2, BaF2, ZnSe, KRS-5, and Ge substrates
  • High extinction ratio
  • High transmission
  • 25 mm clear aperture
  • FT-IR compatible mounting features
  • Wide acceptance angle for non-collimated beam
  • More details

    Polarizers for FTIR spectroscopy

    Specac manufacture a range of infrared wire grid polarizers for FTIR spectroscopic analysis.

    Polarizer applications

    • the study of orientation effects of single crystals, polymers, and other molecules 
    • measuring thin films on reflective surfaces
    • obtaining optimum sensitivity for reflectance measurements

    Polarizer substrates

    • calcium fluoride (CaF2)
    • barium fluoride (BaF2)
    • zinc selenide (ZnSe)
    • thalium bromoiodide (KRS-5)
    • germanium (Ge)

    With a grid periodicity of 4000 lines/mm, they offer high extinction coefficients and excellent throughput over the range 5000 cm-1 to 285 cm-1. The thin profile of this polarizer makes it suitable for FT-IR applications in which there are space constraints.

    Usable in conjunction with spectrometer accessories

    These polarizers are designed to fit directly into the aperture ports of all Specac Benchmark™ baseplate compatible accessories, such as the Golden Gate™ ATR, Silver Gate™ Evolution ATR, Gateway™ horizontal ATR systems, and the Cyclone™ and Tornado™ long pathlength gas cells. Alternatively, these polarizers are compatible with Specac’s 3” by 2” Slide Mount Polarizer Mount.


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