Products List
|
|
Home > Products > Materials
Optical Materials, Crystals
 General optical glass: SCHOTT or equivalent, Chinese optical glass
Special glass, Functional Glass: Fused Silica, Colored glass, borosilicate glass, Float glass
Crystal: Sapphire, Quartz, Germanium, Silicon, Ruby, ZnSe, CaF2, MgF2, etc.
|
|
|
CZ Sapphire Monocrystal |
Germanium Monocrystal |
Fused Silica |
| |
|
|
|
|
|
ZnSe CVD |
Silicon Monocrystal |
CaF2 |
Properties of sapphire crystal:
| Physical and optical properties |
|
| transmission Range |
0.17 to 5.5um |
| Refractive Index |
No 1.75449; Ne 1.74663 @ 1.06um |
| Reflection Loss |
14% @ 1.06um |
| Absorption Coefficient |
0.3 x 10-3cm-1 @2.4um |
| Reststrahlen Peak |
13.5um |
| dn/dT |
13.1x10-6 @ 0.546um |
| dn/du = 0 |
1.5 um |
| Density |
3.97 g/cc |
| Melting Point |
2040 |
| Thermal Conductivity |
27.21 W m-1 K-1 @ 300K |
| Thermal Expansion |
5.6 (para) & 5.0 (perp) x 10-6/K |
| Hardness |
Knoop 2000 with 2000g indenter |
| Specific Heat Capacity |
763 J Kg-1 K-1 @ 293K |
| Dielectric Constant |
11.5 (para) 9.4 (perp) @ 1MHz |
| Youngs Modulus (E) |
335 GPa |
| Shear Modulus (G) |
148.1 GPa |
| Bulk Modulus (K) |
240 GPa |
| Elastic Coefficients |
C11=496 C12=164 C13=115 C33=498 C44=148 |
| Apparent Elastic Limit |
300MPa (45,000 psi) |
| Poisson Ratio |
0.25 |
| Solubility |
98x10-6g/100g water |
| Molecular Weight |
101.96 |
| Class/Structure |
trigonal (hex), R3c |
Properties of UV Fused Silica:
| transmission Range |
0.18 to 2.5um |
| Refractive Index |
1.46 |
| Water absorption - saturation (%) |
0 |
| Volume resistivity (Ohm.cm) |
1018@25 C |
| Compressive strength (Mpa) |
1100 |
| Density |
2.202 g/cm3 |
| Melting Point |
1715 |
| Thermal Conductivity |
1.46 W m-1 K-1 @ 20 C |
| Themal Expansion Coefficient |
a = 0.54 x 10-6/K |
| Specific heat (J/K/kg) |
670-740 @ 25 C |
| Hardness - Knoop (kgf/mm2) |
820 |
| Hardness - Vickers (kgf/mm2) |
1000 |
| Hardness - Mohs |
7 |
| Thermo-Optic Coefficients |
dn/dT= 1.0 x 10-5 /oC |
| Optical Homogeneity |
delta n < 10-6 /cm |
| Dielectric strength |
25-40 kV/mm |
| Dielectric constant |
3.8 |
| Shear strength |
70 MPa |
| Tensile modulus |
72-74 GPa |
| Tensile strength |
48 Mpa |
| Apparent porosity (%) |
0 |
| Upper continuous use temperature |
1100-1400 C |
Properties of germanium crystal:
Physical and optical properties
|
|
| transmission Range |
1.8 to 23um |
| Refractive Index |
4.0026 @ 11um |
| Reflection Loss |
53% @ 11um |
| Absorption Coefficient |
<0.027 cm-1 @ 10.6um |
| Reststrahlen Peak |
N/A |
| dn/dT |
396 x 10-6 /°C |
| dn/du = 0 |
almost constant |
| Density |
5.33 g/cc |
| Melting Point |
936°C |
| Thermal Conductivity |
58.61 W m-1 K-1 @ 293K |
| Thermal Expansion |
6.1 x 10-6/°C @ 298K |
| Hardness |
Knoop 780 |
| Specific Heat Capacity |
310 J Kg-1 K-1 |
| Dielectric Constant |
16.6 @ 9.37GHz @300K |
| Youngs Modulus (E) |
102.7 GPa |
| Shear Modulus (G) |
67 GPa |
| Bulk Modulus (K) |
77.2 GPa |
| Elastic Coefficients |
C11=129 C12=48.3 C44=67.5 |
| Apparent Elastic Limit |
89.6MPa (13,000 psi) |
| Poisson Ratio |
0.28 |
| Solubility |
insoluble in water |
| Molecular Weight |
72.59 |
| Class/Structure |
Cubic Diamond, Fd3m |
* For more information or other materials and requests, please contact us.
 |
Home
: +86 25 83427907 
: +86 25 8342 6285 
: 
