LASER RODS Alexandrite0 pages
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Alexandrite
710-800 nm
Available Rod Lengths 3 mm - 152.4 mm Available Rod Diameters 2 mm - 12.7 mm
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)
Ć//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