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.