Description
KRS-5 Infrared Crystal (thallium bromo-iodide) is mixed from thallium bromide and thallium iodide crystals. It is non-hygroscopic with a wide infrared transmission range. Air operation needs no purge.
KRS-5 Infrared Crystal transmission
In air, it transmits a wide infrared wavelength range from 0.5 to 40 µm. Its transmission reaches above 70 percent, making it a useful infrared material. Signal stays strong across the band. A single window covers bands that otherwise need multiple materials. Above-70% transmission keeps signal strong. The 0.5 µm edge reaches into the visible. One material replaces several window materials. The 40 µm edge covers the far-IR band.
KRS-5 Infrared Crystal advantages
Non-hygroscopic properties. Wide transmission range. High transmittance above 70%. Handling is simpler than hygroscopic alternatives. No desiccator storage is needed. The wide range simplifies system design. Prisms benefit from the same band.
Typical applications
Infrared optical windows. Prisms. Lenses. Fourier infrared spectrometer windows. FTIR instruments rely on broad windows. Spectroscopy labs stock it for FTIR. Prisms and lenses extend the optics set. Match the window to your spectrometer. Lens designers value the broad band. For a high-index alternative, see our Ge Infrared Crystal.
Request a quote for KRS-5 Infrared Crystal with your window size and thickness. Specify the wavelength range. Volume orders support instrument production. Tell us the band and we will size the window. Custom sizes are cut to order.





