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YAG substrate

YAG substrate

 

The main performance parameters

Crystal structure

Cubic

Lattice Constant

12.02 A

Melting point

1970 ℃

Mohs hardness

8.5

Density

4.55 + 0.04g/cm3

Specific heat

0.59J/g cm? -3 @0-20 ℃

Modulus of elasticity

310 GPa

Young's modulus

3.17x10 4 Kg/mm2

Poisson ratio

0.3

Tensile strength

0.13-0.26GPa

Thermal expansion coefficient

 [111]: 7.8x10 -6  /℃ @0-250℃

[110] : 7.7x10 -6  / ℃ @0-250℃

[100]: 8.2x10  -6 / ℃ @0-250℃

Thermal conductivity

14W/m/K@20 ℃

10.5W/m/K@100 ℃

Calorescence coefficient

Dn/dt = 7.3x10-6 /℃

Thermal shock

800W/m

Refractive index

1.8197@1064mm

Transmittance range

250-5000nm
(Without absorption in 2000 - 3000 nm)

Anti-optical-damage threshold

≥ 15Jcm -2 @1064nm

Standard Orientation

<111> and <100>

 

Standard Specification
Product Name Orientation Standard Size Thickness Polishing  
YAG substrate <100> ±0.5°
<110> ±0.5°
<111> ±0.5°
Or other off-angle
10x10mm
10x5mm
5x5mm
20x20mm
φ1" x 1.0mm
φ2" x 1.0mm
Or others
0.1mm
0.2mm
0.5mm
1.0mm
2.0mm
Or others
Fine ground
Single side polished
Double side polished

Roughness: Ra<5A(0.5nm)
Inquiry Online
 

Yttrium aluminum garnet (YAG) is a cubic crystal system crystal, It has excellent optical, thermal properties. Its mechanical properties and chemical stability are close to the sapphire(Al2O3) crystal, and doesn't have the sapphire's birefringence; The pure YAG crystal has a high transmittance in the 0.25~5 um region,  and has no absorption at 2-3 um, while the glass has a strong H2O absorption zone in this area. Therefore, undoped pure YAG crystal is a new type of substrate and window material for UV and infrared optical equipment, and the excellent physical and optical properties of YAG crystal make it an important application in high temperature and high energy physical environments.

 

 
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