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YAG Crystals

Pure YAG Yttrium Aluminum Garnet is a new substrate and window material that can be used for both UV and IR optics. It is particularly useful for high-temperature and high-energy applications. The mechanical and chemical stability of YAG is comparable to sapphire crystal, but YAG is unique with no birefringence which is extremely important for some optical applications.

Applications of YAG Crystals


  • Laser igniters

  • Laser-induced breakdown spectroscopy

  • Optical substrates and windos

  • Particle image velocimetry

  • Cavity ring-down spectroscopy

  • Transparent electronic substrates

  • Right angle prism


Advantages of YAG Crystals


  • Transmission in 0.25-5.0mm, no absorption in 2-3mm

  • High thermal conductivity, 10 times better than glasses

  • Extremely hard and durable

  • Non-birefringence

  • Stable mechanical and chemical properties

  • High bulk damage threshold

  • A high index of refraction, facilitating low aberration lens design


Specifications of YAG Crystals


Orientation

<111>crystalline direction

Size

Upon the customer’s request

Diameter Tolerance

+0/-0.1 mm

Thickness Tolerance

+/-0.1 mm

Aperture

>90%

Surface Quality

80/50~10/5 (S/D)

Perpendicularity

<15 arc minute

Parallelism

<1 arc minute

Flatness

<λ/8 @ 632.8 nm

Chamfer

0.1-0.5mmx45°

Coating

Uncoated or AR upon customer’s request


Properties of YAG Crystals


Transmission range

0.21-5.5

Chemical formula

Y3Al5O12

Crystal structure

Cubic

Lattice parameters

11.9538 Å

Density

4.55 g/cm3

Melting Point

1950 ℃

Refractive Index (λ=550nm)

1.84

Thermal Conductivity /(W·cm-1·K-1@25°C)

0.14

Thermal Expansion (10^-6/℃)

6.9

Specific Heat /(J·g-1·K-1)

590

Hardness (Mohs)

8-8.5

Reflection loss

16.7%@1.06um

Poisson ratio

n/a

Solubility

Insoluble


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Head Office: No. 66, 8 Group, Chengbei Village, Yanguan Town, Jiaxing 314411, China;

Hangzhou Branch: Room 1012, Chunhua Bussiness Center, No. 159, Hangbo Street, Shangcheng District, Hangzhou 310009, Zhejiang, China
sales@ostphotonics.com; info@ostphotonics.com +86-0571-86780460