Infrared-transmitting glass containing sulfur, selenium, or tellurium.
Core Principles & Analysis
Arsenic selenide chalcogenide glasses transmit infrared light out to about 12 µm, so they are molded into lenses for thermal imaging cameras.
The germanium-antimony-tellurium alloy GST switches rapidly between amorphous and crystalline states, the basis of rewritable optical discs and phase-change memory.
Built on sulfur, selenium, or tellurium instead of oxygen, most chalcogenide glasses are opaque to visible light.