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Knight Optical is a leading provider of high-quality YAG optical components, including windows, lenses, rods, and YAG ground blanks. Our YAG products, short for Yttrium Aluminium Garnet, are renowned for their durability and exceptional optical characteristics, making them an excellent alternative to sapphire due to their similar transmission range and refractive index but with easier polishing and no birefringence.
Our range of YAG optics is designed to meet the diverse needs of our clients, offering both uncoated and coated options, including broadband antireflective (BBAR) coatings to enhance the performance of your YAG laser systems. Whether you are looking for standard YAG optical components or custom solutions tailored to your specific needs, Knight Optical is committed to delivering the highest quality and precision.
If you’re in the market for YAG, we offer competitive yttrium aluminium garnet price points and have an extensive range of YAG products available for sale. Contact our technical sales team to discover how our high-quality YAG optics can enhance your instrumentation and supply chain experience.
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Optical Properties of YAG
Every YAG component we supply is meticulously tested by our experienced technicians in our state-of-the-art metrology lab, ensuring that all components meet our strict quality standards. This commitment to quality ensures that our YAG optical components provide reliable and outstanding performance in a variety of applications.
Below is a summary of YAG’s optical properties.
| Transmission Range | 0.21 to 5.5µm |
|---|---|
| Refractive Index | 1.81523 @ 1.06µm |
| Density | 4.56 g/cm3 |
| Melting Point | 1940°C |
| Hardness | Knoop 1215 |
| Diameter | < 5mm to 100mm |
|---|---|
| Form error (@633nm) | < 0.25 waves |
| Centration/parallelism | < 1 arc minute |
| Scratch/dig | < 20/10 |
| Typical coatings | BBAR @ 3-5µm, DLC @ 3-5µm |
Frequently Asked Questions
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What is YAG used for in lasers and optics?
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YAG, or Yttrium Aluminium Garnet, is primarily used in solid-state laser systems as a laser medium due to its excellent thermal and optical properties.
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What are the properties of YAG that make it suitable for laser applications?
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YAG is favored for its high thermal conductivity, hardness, and optical clarity, making it ideal for high-power laser optics and other optical components.
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How does YAG compare to other laser materials?
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YAG is known for its stability, durability, and efficiency compared to other laser materials, which is why it’s widely used in medical and industrial lasers.
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What is the price range for Yttrium Aluminium Garnet in the market?
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The price of Yttrium Aluminium Garnet can vary widely based on purity, size, and processing, generally reflecting its high quality and demand in optical applications.
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Where can I buy Yttrium Aluminum Garnet for optical use?
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Yttrium Aluminum Garnet can be purchased from specialized suppliers and manufacturers who provide optical-grade materials for laser and other high-tech applications.
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What are the applications of YAG optics outside of laser systems?
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Apart from lasers, YAG optics are used in various applications including telecommunications, industrial machining, and medical devices, leveraging their strength and optical clarity.
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Additional Information
Crystalline growth
Crystalline YAG is grown via the Czochralski technique.
Optical homogeneity
YAG crystal has good optical homogeneity across its transmission range and can be used in high temperature and high energy applications.
YAG crystal
YAG crystal is often used in place of sapphire, where durability is needed but sapphire’s birefringence is an issue. YAG shares similar mechanical and optical properties to sapphire, including its transmission range and a high refractive index, but it is not birefringent.
Typical Applications
Laser crystal
When YAG is doped with metals such as neodymium (Nd), thulium (Tm), erbium (Er), and chromium (Cr) it can be used as an active laser crystal. Undoped YAG cannot.
Nd:YAG
Nd:YAG is the most widely used active laser medium, with an operating wavelength of 1064nm. It is the medium in most solid state lasers that are used for scientific and medical applications, such as ophthalmology and laser spectroscopy.
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With our in-house state-of-the-art metrology laboratory you can be confident that your optical components will meet your requirements. You can find out more about our testing facilities here.
Operating for over 30 years
Knight Optical has been operating for over 30 years, with our managing director Colin Overton at the helm. Over this time, we have become a global leader in the production and distribution of scientific optical components and bringing quality into focus for all of our products and services that we provide.
Our 2022/2023 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.
Click below to view our digital catalogue now.