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Tech Notes » Material Data

 

Our Material Data Tech Notes include transmission curves, refraction indices, and useful wavelength ranges for the most common optical materials.

 

Quick Reference

 
Magnesium Fluoride Calcium Fluoride 
Barium Fluoride UV-Grade Fused Silica
IR Grade Fused Silica Crystal Quartz
BK7 Sapphire
Spinel Silicon
Germanium Zinc Selenide
Zinc Sulfide Cleartran
Gallium Arsenide AMTIR
 
materials
 
 
 
 
   
Chemical Formula: MgF2
Refractive Index (@ 1.01 microns): 1.38
Useful Wavelength Range (Transmission): 150nm to 8.0µm
 
 
Chemical Formula: CaF2
Refractive Index (@ 1.01 microns): 1.43
Useful Wavelength Range (Transmission): 150nm to 8.0µm
 
MagnesiumFluoride  
CalciumFuoride
 
 
 
 
 
   
Chemical Formula: BaF2
Refractive Index (@ 1.01 micron): 1.47
Useful Wavelength Range (Transmission): 300nm to 9.5µm
 
 
Chemical Formula: SiO2
Refractive Index (@ 588nm): 1.46
Useful Wavelength Range (Transmission): 
175nm to 2.2µm, 2.9µm to 3.6µm
 

BariumFluoride

 

UV-gradeFusedSilica

 
 
 
 
 
   
Chemical Formula: SiO2
Refractive Index (@ 5.88nm): 1.46
Useful Wavelength Range (Transmission): 200nm to 2.4µm
 
Chemical Formula: SiO2
Refractive Index (@ .99 micron): 1.54
Useful Wavelength Range (Transmission): 200nm to 2.4µm
 
 
IR-gradeFusedSilica   CrystalQuartz
 
 
 
 
 
   

BK7



Chemical Formula: BK7
Refractive Index (@ 588nm): (@588nm – 1.51
Useful Wavelength Range (Transmission): 320nm to 2.3µm
 
 
Chemical Formula: AI2O3
Refractive Index (@ 1.01 micron): 1.76
Useful Wavelength Range (Transmission): 150nm to 5.0µm
 
BK7  
Sapphire
 
 
 
 
 
   
Chemical Formula: MgAI2O4
Refractive Index (@ 1.01 micron): 1.72
Useful Wavelength Range (Transmission): 400nm to 5.0µm
 
 
 
Chemical Formula: Si
Refractive Index (@ 5.0 microns): 3.42
Useful Wavelength Range (Transmission): 
1.06µm to 6.7µm, 30µm to FIR
 
Spinel  
Silicon
 
 
 
 
 
 
 
 
 
 
 

Germanium (Ge)

 
Chemical Formula: Ge
Refractive Index (@ 4.87 microns): 4.02
Useful Wavelength Range (Transmission): 2.0µm to 17.0µm
 
 
 
Chemical Formula: ZnSe
Refractive Index (@ 1.00 micron): 2.49
Useful Wavelength Range (Transmission): 500nm to 20.0µm
 
Germanium  
ZincSelenide
 
 
 
 
 
 
 
 
 
 
 
Chemical Formula: ZnS
Refractive Index (@ 1.00 micron): 2.27
Useful Wavelength Range (Transmission): 450nm to 14.0µm
 
 
Chemical Formula: ZnS
Refractive Index (@ 1.01 micron): 2.29
Useful Wavelength Range (Transmission): 400nm to 12.0µm
 
ZincSulfide  
Cleartran
 
 
 
 
 
 
 
 
 
 
 
Chemical Formula: GaAs
Refractive Index (@ 10 microns): 3.14
Useful Wavelength Range (Transmission): 1.0µm to 8.0µm
 
 
Chemical Formula: GeAsSe
Refractive Index (@ 10 microns): 2.5
Useful Wavelength Range (Transmission): 150nm to 8.0µm
GalliumArsenide  
Amtir