TWO-LAYERED CRYSTAL INFRARED LIGHT GUIDE FOR SPECTRAL RANGE 2-50 mcm Russian patent published in 2019 - IPC G02B6/02 

FIELD: physics.

SUBSTANCE: invention relates to fiber-optic infrared Fourier spectroscopy, specifically to two-layer infrared lightguides, which are transparent in the middle infrared spectral range from 2.0 to 50.0 mcm and are made from radiation-resistant crystals of a certain composition based on a silver bromide system – a solid solution of monovalent halogenides thallium (TlBr_0.46I_0.54). Two-layer crystalline infrared light guide for spectral range of 2.0–50.0 mcm, including core and shell made of crystals based on silver bromide, containing a solid solution of bromide-iodide monovalent thallium (TlBr_0.46I_0.54), characterized in that the core is made with diameter of 900±10 mcm and contains ingredients in following ratio of components, wt%: silver bromide 13.0–7.0, solid solution (TlBr_0.46I_0.54) 87.0–93.0, and shell is made with diameter of 1100±15 mcm and is made of crystals at following ratio of components, wt%: silver bromide 18.0–15.0 solid solution (TlBr_0.46I_0.54) 82.0–85.0.

EFFECT: possibility of using an infrared light guide in high radiation conditions.

1 cl, 1 dwg