Introduction:
LiF crystals have the following exceptional properties that make it a very important optics single crystal:
(1) High optical transmittance from the vacuum ultraviolet to the infrared spectrum region(0.12-6μm) and shows excellent transmittance in the VUV regions.
(2) Used for Optical prisms, lenses, wedges, windows, other optical components,and etc.
We are the largest fluoride crystals provider in China, our LiF crystals are especially suitable for Excimer or VUV windows.
LiF Specifications:
We produce prisms, lenses, wedges, windows,wedges, and other optical components according to customers’ specifications and drawings.
|
Size |
Diameter up to 60mm; |
|
Inclusion |
None visible |
|
Dimension tolerance |
±0.1mm |
|
Oriential tolerance |
2 arc minutes |
|
Angle tolerance |
10 arc minutes |
|
Scratch/Dig code |
20/10 to MIL-O-13830A |
|
Parallelism |
20 arc seconds |
|
Flatness |
λ/10 @ 632.8 nm |
Related Technologies
|
Density |
2.64g/cm3 |
|
Melting Point |
870℃ |
|
Molecular Weight |
25.9394 |
|
Lattice Constant |
4.0279 Å |
|
Thermal Conductivity |
4.01 W/(m K) |
|
Specific Heat |
1562 (J kg-1 K-1) |
|
Thermal Expansion |
28.1 - 34.8 (10-6/K) |
|
Hardness (Knoop) |
102–103kg/mm2 |
|
Hardness (Mho) |
3 |
|
Young’s Modulus |
64.79GPa |
|
Shear Modulus |
55.14 GPa |
|
Bulk Modulus |
62.03 GPa |
|
Rupture Modulus |
10.8 MPa |
|
Elastic Coefficient |
C11 = 112 / C12 = 45.6 / C44 = 3.2 GPa |
|
Poisson's Ratio |
|
|
Crystal Type |
Fm3m ,cubic, NaCl type structure |
|
Dielectric Constant |
9.0 @ 25 °C, f = 100...109 Hz |
|
Solubility in Water |
0.27 (g/100 cm3) @ 18 °C |
|
Application |
VUV,DUV |
|
Wavelength (nm) |
150 |
193 |
248 |
308 |
400 |
600 |
800 |
|
Refractive index |
1.4990 |
1.4477 |
1.4182 |
1.4083 |
1.3992 |
1.3918 |
1.3889 |
|
Wavelength (nm) |
1000 |
2000 |
3000 |
4000 |
5000 |
6000 |
7000 |
|
Refractive index |
1.3871 |
1.3787 |
1.3666 |
1.3494 |
1.3266 |
1.2974 |
1.2556 |
