Yttrium Aluminum Garnet (Y3Al5O12)
Crystal properties | ||||
Crystal Type |
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Crystal Structure | single crystal, synthetic | |||
Lattice Parameters | a = 12.004 Å | |||
Orientation | 111, 100 | |||
Application | active laser crystals (dopants: Nd, Tm, Ho, Er, Cr) spectroscopy vacuum windows |
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Solubility in Water | none | |||
Dielectric Constant | 11.7 | |||
Elastic Coefficients | C11 = 3.33 GPa C12 = 1.11 GPa C44 = 1.15 Gpa |
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Young’s Modulus | 300 Gpa | |||
Hardness (Knoop) | 1215 (8.5 Mohs) | |||
Thermal Expansion | 7.8 ×10–6 / K (111) 7.7 ×10–6 / K (110) 8.2 ×10–6 / K (100) |
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Specific Heat | 590 J / (kg K) | |||
Thermal Conductivity | 14.0 W / (m K) 13.0 W / (m K) |
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Molecular Weight | 593.618 | |||
Melting Point | 1940 °C / 1970 oC | |||
Density | 4.56 g/cm3 | |||
dn / dT | 9.86 ± 0.04 ×10–6 / K 7.3 ×10–6 / K |
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Refractive Index | 1.8245 @ 0.8 µm 1.81523 @ 1.06 µm 1.8121 @ 1.4 µm |
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Transmission Range | 0,25 ... 5 µm | |||
Chemical Resistance | Inert | |||
Max. of Emission (nm) | 550 | |||
Decay Constant (ns) | 70 | |||
Absorption Length (cm) | 2.61 | |||
Relative Efficiency (%) | 125 |
YAG LASER ROD | |
Chemical Composition | Y3Al5O12 (Yttrium Aluminium Garnet) |
Dopant | Neodymium, Erbium |
Dopant Concentration (atomic%) | 0.4 ~ 1.1 |
Crystallographic Orientation | (111) ± 5° |
Diameters available (mm) | 2 ~ 12 |
Diameters tolerance (?m) | ± 25 |
Lengths available (mm) | 30 ~ 250 |
End Face Flatness | Within ? / 10 |
Parallelism of end faces | 10 arc seconds or less |
End face perpendicularity | 5 arc minutes or less |
Extinction Ratio | 30 dB Min. |
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