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YAG (Yttrium Aluminium Garnet, Yttrium Aluminium Oxide Y3Al5O12) is a durable, synthetic material belonging to the garnet group. It can be used as an alternative to sapphire, being both easier to polish and not free from birefringence. YAG is frequently used in solid state laser systems where doping with certain rare elements such as neodymium and erbium takes place to improve performance, e.g. Nd:YAG, Er:YAG, etc. Undoped YAG transmits between 0.21-5.5μm.

YAG is typically used as an active laser crystal when doped, but its durability and optical properties mean it can also be used as an optical material in place of sapphire. YAG lasers have a broad range of applications, from ophthalmology in medicine to laser range finding equipment for military use.

Knight Optical supply a range of quality YAG optical components including YAG windows, YAG lenses, YAG prisms, and YAG blanks either from stock or custom made to your specification for a range of applications. Every component is individually tested by our highly skilled technicians in our state of the art metrology lab to ensure all components meet our high quality standards.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality YAG optical components and service can improve your instrumentation and supply chain experience.

Our 2018/2019 Catalogue

Inside Knight Optical’s catalogue you’ll find details of the industries we serve as well as the many other services we can offer. It also showcases hundreds of our most popular products, supported by useful technical information, to help you choose the right part for your application.
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