Alexandrite (710-800 nm)
Applications
Medical, Cosmetic, Spectroscopy, Industrial Ordering Options and Specifications
| Ordering Options and Specifications |
| %Cr Concentration |
0.13% (0.10% to 0.20% available) |
| Wavefront Distortion (per inch of rod length) |
l/2 |
| End Face Parallelism |
<30 arc seconds |
| Material Properties |
| Formula |
Be (Al1-xCrx)2O4 |
| Crystal Structure |
Orthorhombic |
| Unit Cell Dimensions (Å) |
5.476(a) x 9.404(b) x 4.427(c) per ASTM 10-32 |
Thermal Expansion
(x 10-6 °C-1) |
5.9(a) x 6.1(b) x 6.7(c) |
Index of Refraction
(at 750 nm) |
1.7367(a) x 1.7241(b) x 1.7346(c) |
| Melting Point |
1870°C |
| Vickers Hardness |
2000 kg mm-2 |
| Density |
3.7 g/cm3 |
| Thermal Conductivity |
0.23 W cm-1 K-1 |
| Young's Modulus |
469 GPa |
| Thermal Shock Resistance |
35-74 W/cm |
| dn/dT |
8 x 10-6 K-1 |
Available Rod Lengths
3 mm - 152.4 mm
Available Rod Diameters
2 mm - 12.7 mm
Click here to download absorption spectrum in Adobe Acrobat format.
View our Alexandrite ALLEXITETM datasheet.
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