RefractiveIndex.INFO

Refractive index database


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Optical constants of Ge (Germanium)
Li 1980: n 1.9-18 µm; 500 K

Wavelength: µm
 (1.90 – 18.0)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Comments

500 K (227 °C)

References

H. H. Li. Refractive index of silicon and germanium and its wavelength and temperature derivatives, J. Phys. Chem. Ref. Data 9, 561-658 (1993)

Data

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INFO

Germanium, Ge

Germanium is a popular optical material for infrared wavelengths. Ge optical components (lenses, filters, beamsplitters etc.) are used in thermal imaging, CO2 lasers, night vision systems and other applications in mid-wave infrared (MWIR) and long-wave infrared (LWIR).

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