LiF crystals have the following exceptional properties that make it a very important optics single crystal:
High optical transmittance from the vacuum ultraviolet to the infrared spectrum region(0.12-6μm) and shows excellent transmittance in the VUV regions.
Properties:
|
Related TechnologiesDensity
|
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
|
|
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
|
PHOSCTECH can provide different dimension LiF lens, LiF window, LiF Prism and LiF wedge.
Capability:
|
Attribute
|
Commercial
|
High Precision
|
|
Diameter Available
|
2mm～60mm
|
2mm～60mm
|
|
Typical Thickness
|
0.5mm,2mm,5mm,8mm,10mm
|
0.5mm,2mm,5mm,8mm,10mm
|
|
Oriential Tolerance
|
2 arc minutes
|
2 arc minutes
|
|
Dimension Tolerance
|
± 0.1mm
|
± 0.02mm
|
|
Surface Quality
|
60-40 scratch and dig
|
20-10 scratch and dig
|
|
Flatness
|
λ/2
|
λ/10
|
|
Parallelism
|
1'
|
20"
|
|
Centration(arc min)
|
＜3'
|
＜1'
|
中文版
English
LiF Crystal