Gallium Arsenide (GaAs) is a tough, IR transmitting, semi-insulating and insoluble material that shares many mechanical properties with Germanium. Gallium Arsenide is typically used where hardness and durability are desirable. Yong Hee Photonics supplies high quality gallium arsenide components, including windows, lenses, and ground blanks, made to your custom specification. We can offer uncoated and coated optics, including broadband antireflective (BBAR) and diamond-like carbon (DLC) coatings. 

Application case: 

GaAs: φ25.4x2mm, S1: AR@10.2-10.8um, T>98%,R<1%; S2: HR@630-640nm, Ravg>50%

Applications:

GaAs is semi insulator, which can be used in large power continuous CO2 laser system to replace the zinc sulfide in lens or mirror forms.