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25.4mm Dia., 5mm Thick, Uncoated, ISP Optics Lithium Fluoride (LiF) Window | LF-W-25-5

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Stock #24-476 Clearance 10 to 12 days
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Abbe Number (vd):
97.29
Axis Orientation:
Random
Bevel:
Protective as needed
Clear Aperture (%):
90
Clear Aperture CA (mm):
21.59
Diameter (mm):
25.40 +0.00/-0.13
Thickness (mm):
5.00 ±0.13
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
37
Density (g/cm3):
2.64
Edges:
Fine Ground
Index of Refraction nd:
1.392
Knoop Hardness (kg/mm2):
102
Parallelism (arcmin):
<3
Poisson's Ratio:
0.33
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Lithium Fluoride (LiF)
Surface Flatness (P-V):
2λ @ 632.8nm
Surface Quality:
60-40
Type:
Protective Window
Wavelength Range (nm):
150 - 6000
Young's Modulus (GPa):
64.97
Model Number:
LF-W-25-5

Regulatory Compliance

Certificate of Conformance:

Product Family Description

  • Excellent Vacuum UV (VUV) Transmission
  • High Transmission from 150nm - 6μm
  • Low Index of Refraction

ISP Optics Lithium Fluoride (LiF) Windows provide excellent transmission in the vacuum ultraviolet (VUV) wavelength range of 150 – 200nm, as well as at the hydrogen Lyman-alpha line (121nm). In addition to high transmission into the UV, these windows also feature superior transmission in the Visible and Infrared up to 6µm. Lithium fluoride has a low index of refraction, allowing these windows to be used without an anti-reflection (AR) coating. ISP Optics Lithium Fluoride (LiF) Windows are ideal for use as UV transmission windows in spectroscopy applications, as a diffracting element in X-ray spectrometry, or as infrared windows for thermal imaging applications.  

Note: Lithium fluoride is sensitive to thermal shock and is attacked by atmospheric moisture at temperatures above 400°C.

 
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