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Products › Materials › Yttrium Aluminium Garnet (YAG)
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Yttrium Aluminium Garnet (YAG) |
| YAG (Yttrium aluminium oxide Y3Al5O12) is an active laser crystal when dopants such as Nd, Tm, Er, and Cr are used. Being cubic there is no double refraction and it is sometimes used for a window material substituting for sapphire. |
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Product Data |
| Transmission Range : |
0.21 to 5.5 μm |
| Refractive Index : |
1.81523 at 1.06 μm (1) |
| Reflection Loss : |
16.7% at 1.06 μm |
| Absorption Coefficient : |
n/a |
| Reststrahlen Peak : |
n/a |
| dn/dT : |
+9.1 x 10-6 K-1 at 1064nm (2) |
| dn/dμ = 0 : |
n/a |
| Density : |
4.56 g/cc |
| Melting Point : |
1940 °C |
| Thermal Conductivity : |
14 W m-1 K-1 |
| Thermal Expansion : |
7.8 (111), 7.7 (110), 8.2 x 10-6 K-1 (100) |
| Hardness : |
Knoop 1215 |
| Specific Heat Capacity : |
590 J Kg-1 K-1 |
| Dielectric Constant : |
11.7 |
| Youngs Modulus (E) : |
300 GPa |
| Shear Modulus (G) : |
n/a |
| Bulk Modulus (K) : |
n/a |
| Elastic Coefficients : |
C11=333; C12=111; C44=115 |
| Apparent Elastic Limit : |
280 MPa |
| Poisson Ratio : |
n/a |
| Solubility : |
Insoluble in water |
| Molecular Weight : |
593.62 |
| Class/Structure : |
Cubic, m3m |
To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page. To expand the transmission graphs, please click on the image.
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Refractive Index |
| µm |
No |
µm |
No |
µm |
No |
| 0.266 |
1.9278 |
0.354 |
1.8725 |
0.532 |
1.8368 |
| 0.800 |
1.8245 |
0.808 |
1.8217 |
0.946 |
1.8186 |
| 1.030 |
1.8173 |
1.064 |
1.8169 |
1.333 |
1.8146 |
| 1.444 |
1.8140 |
1.500 |
1.8137 |
1.640 |
1.8132 |
| 2.014 |
1.8123 |
2.097 |
1.8121 |
2.123 |
1.8121 |
| 2.940 |
1.8113 |
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Product Notes |
YAG crystal is produced by the Czochralski growth process up to approximately 100mm diameter.
REFERENCES:
(1) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
(2) Wilson, Thermo-Optic Coefficients. PhD dissertation. U Southern Calif. Jan 1980
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Data provided is extracted from our technical handbook of materials. While every attempt has been made to verify the source of the information, Crystran Ltd accept no responsibility for accuracy of data |
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