| Crystal structure | monoclinic |
| Point group | C2/c |
| Cell Parameters | a = 8.09Å; b = 10.43Å; c = 7.588Å |
| β=94.4° | |
| Refractive index, at 1067 nm | ng=2.033；np=2.037；nm=1.986 |
| Mohs hardness | 5 |
| Density | 7.27g/cm3 |
| Melting Point | 1075℃ |
| Thermal conductivity @373K，W/cm/K | K[100] = 0.026; K[010] = 0.038; K[001] = 0.034 |
| Thermal expansion coefficient @373K | α[100] = 4 x 10-6 K-1; α[010] = 1.6 x 10-6 K-1; |
| α [001] = 8.5 x 10-6 K-1 | |
| Lasing Wavelength | 1023-1060nm |
| Absorption band | 981nm（FWHM 3.7nm） |
| Fluorescent lifetime | 600μs（5% doping） |
| Orientation | [010] |
| Standard Dopant concentration（at.%） | 5% |
| Maximum length | 50mm |
| Length tolerance，mm | +1.0/-0.0 |
| Diameter tolerance，mm | +/-0.1 |
| Parallelism | ＜30″ |
| Perpendicularity | ＜15′ |
| Surface quality | 20/10 |
| coating | AR-coated |
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