Yttrium-Aluminum-Garnet ( Y3Al5O12)
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Crystal properties |
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Crystal Type. |
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Crystal Structure |
single crystal, synthetic |
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Lattice Parameters |
a = 12.004 Å |
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Orientation |
111, 100 |
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Application |
active laser crystals |
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Solubility in Water |
none |
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Dielectric Constant |
11.7 |
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Elastic Coefficients |
C11 = 3.33 GPa |
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Young’s Modulus |
300 Gpa |
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Hardness (Knoop) |
1215 (8.5 Mohs) |
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Thermal Expansion. |
7.8 ×10–6 / K (111) |
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Specific Heat |
590 J / (kg K) |
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Thermal Conductivity |
14.0 W / (m K) |
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Molecular Weight |
593.618 |
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Melting Point |
1940 °C / 1970 oC |
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Density |
4.56 g/cm3 |
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dn / dT. |
9.86 ± 0.04 ×10–6 / K |
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Refractive Index |
1.8245 @ 0.8 µm |
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Transmission Range |
0,25 ... 5 µm |
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Chemical Resistance |
Inert |
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Max. of Emission (nm) |
550 |
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Decay Constant (ns) |
70 |
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Absorbtion Length (cm) |
2.61 |
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Relative Efficiency (%) |
125 |
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YAG LASER ROD |
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Chemical Composition |
Y3Al5O12 (Yttrium Aluminium Garnet) |
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Dopant |
Neodymium, Erbium |
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Dopant Concentration (atomic%) |
0.4 ~ 1.1 |
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Crystallographic Orientation |
(111) ± 5° |
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Diameters available (mm) |
2 ~ 12 |
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Diameters tolerance (?m) |
± 25 |
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Lengths available (mm) |
30 ~ 250 |
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End Face Flatness |
Within ? / 10 |
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Parallelism of end faces |
10 arc seconds or less |
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End face perpendicularity |
5 arc minutes or less |
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Extinction Ratio |
30 dB Min. |
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Coating |
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