Seeing (infra)Red: InGaAs Conquers Imaging, Sensing, Telecom

Indium gallium arsenide, or InGaAs, is an alloy of gallium arsenide and indium arsenide. In a more general sense, it belongs to the InGaAsP quaternary system that consists of alloys of indium arsenide (InAs), gallium arsenide (GaAs), indium phosphide (InP), and gallium phosphide (GaP). As gallium and indium belong to Group III of the Periodic Table, and arsenic and phosphorus belong to Group V, these binary materials and their alloys are all III-V compound semiconductors.