Investigating the optical properties of polycrystalline AgCl(1-x)Br(x) (0≤x≤1) and Ag(0.95)Tl(0.05)Br(0.95)I(0.05) for IR engineering.

Using the Michelson technique we measured the refractive indices for the plane-parallel thin plates made of AgClBr(0≤x≤1) and, to the best of our knowledge, for the first time for the AgTlBrI plate, manufactured by hot embossing, at 632.8 nm. We recorded their absorption spectra within the range of 0.