Ge 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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  • Ge ATR Optical Elements

    Germanium (Ge) is a high refractive index material (4.0 @ 10 microns) which provides shallow depth of penetration useful in some ATR applications. It is relatively hard and resistant to most acid and basic samples. The long wavelength cutoff of Ge will limit spectral range for multiple reflection ATR crystals to about 700 cm-1 (depending upon pathlength). Coated versions of our Ge ATR crystals are available for improved IR throughput and enhanced seal within the ATR crystal plate.

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