Wire Grid Polarizers – Infrared Polarizers


Polarizers for FTIR spectroscopy



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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