Germanium offers a high refractive index, low dispersion, and strong transmission in the mid and long infrared ranges. It is widely used for infrared optical windows, high quality lenses, beam shaping elements, and systems that require stable optical performance and precise thermal behavior.

Typical uses include mid IR laser platforms, optical components for imaging and measurement, and protective windows for IR beam paths.

Zinc selenide is a widely used material for infrared laser optics. It provides low absorption, high transmission at 10.6 microns, and excellent optical uniformity, making it ideal for CO2 laser systems.

ZnSe is used for focusing lenses, beam delivery components, output couplers, and windows in both industrial and scientific laser setups. Vital produces ZnSe through chemical vapor deposition and offers blanks, shaped components, and finished optical elements.

Silicon is commonly used as an optical reflector or window material in the 1.5 to 8 micron region. Its high thermal conductivity and low density make it suitable for infrared laser mirrors and various optoelectronic applications.

Silicon components are available in multiple forms and sizes, including wafers, blanks, and polished optical elements. Both P type and N type doping can be provided depending on optical and electrical requirements.

Gallium arsenide provides strong performance in the 2 to 12 micron infrared range. Its high hardness and strength make it a suitable material for certain laser applications where durability is required.

GaAs is used in selected infrared laser systems, protective windows, and specialty optical components. Its controlled optical transmission and structural stability provide reliable performance across a range of optical designs.