FTIR Lithium Fluoride Windows

The FTIR (Fourier Transform Infrared Spectrometer) window of LiF material plays an important role in infrared spectroscopy analysis. Lithium fluoride is a colorless and transparent crystal with high transparency, low refractive index, good chemical stability, and thermal stability. These characteristics make lithium fluoride an ideal material for making FTIR window plates. It is widely used in spectral analysis, X-ray spectrometer, thermal imaging applications and other fields. In addition to lithium fluoride materials, micron optics can also provide FTIR window pieces made of calcium fluoride, barium fluoride, silicon, zinc selenide, zinc sulfide, fused silica and other materials.

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The product undergoes multiple inspections before being stored, and the quality is guaranteed. Please use it with confidence.

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If you need customization or bulk production, please contact us online and we will offer you a discounted price.

	Dia(mm)	ThK(mm)	Surface Quality	Surface Accuracy	Substrate Material
	Screen Reset Customizable	Screen Reset Customizable	Screen Reset 60-40	Screen Reset 5(3)	Screen Reset Lithium Fluoride
More+ Less	Customizable	Customizable	60-40	5(3)	Lithium Fluoride
FTIR Lithium Fluoride Windows Number：PLi01- Dia(mm)：Customizable ThK(mm)：Customizable Surface Quality：60-40 Surface Accuracy：5(3) Parallelism：3′ Diameter Tolerance(mm)：0.0/-0.1 Thk Tolerance(mm)：±0.1 Transmission Range：0.11-7μm Substrate Material：Lithium Fluoride Bevel(mm)：0.35 Chipping(mm)：/ REACH：Compliant ROHS：Compliant

Material Data
Optical Properties
Transmission Range	0.11-7μm
Transmittance	>94.8%@0.6μm
Reflection Loss	5.2%@0.6μm(both surfaces)
Absorption Coefficienet	5.9×10-3@4.3μm
Structure	Cubic Crystal System
Cleavage Planes	<100>
Physical Properties
Density [g/cm3]	2.639
Melting Point [℃]	848
Thermal Conductivity [W/(m×K)]	11.3 @ 314K
Thermal Expansion [10-6/K]	37.0 @ 283K
Knoop Hardness [kg/mm2]	415
Specific Heat Capacity [J/(kg×K)]	1562
Dielectric Constant	7.33 @ 1 MHz
Young's Modulus (E) [GPa]	64.79
Shear Modulus(G) [GPa]	55.14
Bulk Modulus(K) [GPa]	62.03
Poisson Coefficient	0.22
Chemical Properties
Solubility / g/L	2.7g @ 20℃
Molecular Weight / g/mol	25.9394