Silicon ( Si )
![]() |
![]() |
![]() |
Diced Silicon substrat |
||
Crystal properties |
||
Crystal Type |
cubic, diamond structure |
|
Transmission Range |
1.2 ... 15 µm |
|
Refractive Index |
3.4179 @ 10 µm |
|
Reflective Loss |
46.1 % @ 10 µm |
|
Density. |
2.3291 g/cm3 |
|
Melting Point: |
1420 °C |
|
Molecular Weight: |
28.086 |
|
Thermal Conductivity |
163.32 W / (m K) |
|
Specific Heat |
703.4 J / (kg K) @ 25 °C |
|
Thermal Expansion. |
4.05 × 10–6 / K @ 10...50 °C |
|
Hardness (Knoop) |
1150 (Mohs 7) |
|
Young’s Modulus |
131 GPa |
|
Shear Modulus |
79.9 GPa |
|
Bulk Modulus |
102 GPa |
|
Rupture Modulus |
340 MPa |
|
Elastic Coefficien |
C11 = 167 / C12 = 65 / C44 = 80 Gpa |
|
Dielectric Constant |
13 @ f = 9.37 GHz |
|
Solubility in Water |
Insoluble |
|
Crystal Structure |
single crystal |
|
Cleavage Planes |
None |
|
Application |
material for IR optic and Electronics |
List of Optical Crystals |
||||
Materials |
Refractive Index |
Transmission |
Density |
Thermal Expansion |
BK7 glass |
1.5164 (588 nm) |
0.330 – 2.1 |
2.51 |
7.5 |
SF11 glass |
1.78472 (588 nm) |
0.370 – 2.5 |
4.74 |
6.8 |
F2 glass |
1.62004 (588 nm) |
0.420 – 2.0 |
3.61 |
8.2 |
Fused Silica |
1.4858 (308 nm) |
0.185 – 2.5 |
2.20 |
0.55 |
CaF2 |
1.399 (5.0 mm) |
0.170 – 7.8 |
3.18 |
18.85 |
BaF2 |
1.460 (3.0 um) |
0.15 – 12.0 |
4.88 |
18.4 |
Sapphire |
1.755 (1.0mm) |
0.180 – 4.5 |
3.98 |
8.4 |
Silicon |
3.4179 (10mm) |
1.200 – 7.0 |
2.33 |
4.15 |
Ge |
4.003 (10 mm) |
1.900 – 16 |
5.33 |
6.1 |
ZnSe |
2.40 (10 mm) |
0.630 – 18 |
5.27 |
7.8 |
ZnS |
2.2 (10mm) |
0.380 –14 |
4.09 |
6.5 |
LiF |
1.39 (500 nm) |
0.150 – 5.2 |
2.64 |
37 |
KBr |
1.526 (10 mm) |
0.280 – 22 |
2.75 |
43 |
MgF2 |
no = 1.3836 |
0.130 – 7.0 |
7.37 |
a: 13.7 |
YVO4 |
no = 1.9500 |
0.400 – 5.0 |
4.22 |
a: 4.46 |
Calcite |
no = 1.6557 |
0.210 – 2.3 |
2.75 |
a: 24.39 |
Quartz |
no = 1.5427 |
0.200 – 2.3 |
2.65 |
7.07 |
?-BBO |
no = 1.6749 |
0.190 – 3.5 |
3.85 |
a: 4.0 |
LiNbO3 |
no = 2.2863 |
0.370 – 4.5 |
4.64 |
a: 16.7 |