|
|
|
Syngony
|
Cubic
|
|
Symmetry Class
|
m3m Fd3m
|
|
Lattice Constants, Angstroms
|
a=5.43089 c=a
|
|
|
|
|
Refractive Index at n3.0
|
3.436
|
|
Refractive Index, n5.0
|
3.426
|
|
Thermal Coefficient of Refractive Index at l=3.39 microns,îÑ-1 at 25îÑ
|
1.5•10-4
|
|
Transmission Range, microns (thickness 10ìì)
|
1.2¸10,
50¸100
|
|
Transmittance ti(l) vs. wavelength l
|
Si ( Silicon )
|
|
|
|
|
|
Refractive Index n vs.
wavelength l
Si ( Silicon )
|
|
l,ìêì
|
n(l)
|
|
1.5
|
3.484
|
|
2.0
|
3.456
|
|
3.0
|
3.436
|
|
4.0
|
3.429
|
|
5.0
|
3.426
|
|
6.0
|
3.424
|
|
7.0
|
3.423
|
|
8.0
|
3.422
|
|
9.0
|
3.422
|
|
|
|
|
|
Thermal Linear Expansion at, îÑ-1 for 25îÑ
|
2.55•10-6
|
|
Thermal Conductivity, W/(m •îÑ) at 27 îÑ
|
159
|
|
Specific Heat Capacity, J/(kg •îÑ)
|
712.8
|
|
Melting Point, îÑ
|
1412
|
|
|
|
|
Density, g/cm3 at 25 îÑ
|
2.329
|
|
Mohs Hardness
|
7
|
|
Poisson Ratio
|
0.266
|
|
Young Modulus (Å), Pa
|
1.89•1010
|
|
Shear Modulus (G), Pa
|
7.99•1010
|
|
|
|
|
Solubility
|
|
in water g/100cm3
|
|
insoluble
|
|
"Opto-Technological Laboratory" produces lenses, windows, prisms, wedges, ball lenses, cylindrical lenses and others optical components according to customers’ specifications and drawings out of crystals silicon ( Si ) . |
