ZnSe ATR Optical Elements

Spectral Systems offers a comprehensive set of ATR crystals for infrared sampling. We specialize in ATR coatings to optimize the performance and IR throughput for your ATR applications. We manufacture and design proprietary ATR crystals for many of our customers. We also offer many standard ATR replacement crystals for your existing accessory.

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  • ZnSe ATR Optical Elements

    Zinc selenide (ZnSe) is a widely used ATR crystal material and is a relatively hard and brittle material. It is insoluble in water but is attacked by strong acids and bases. ZnSe has a good mid-IR spectral range reaching to about 630 cm-1 for multiple reflection ATR crystals at the long wavelength side of the spectrum (depending upon IR beam pathlength). Coated versions of our ZnSe ATR crystals are available for improved IR throughput and enhanced seal within the ATR crystal plate.

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