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Optical constants of Ge (Germanium)
Ciesielski et al. 2018: 2 nm film; n,k 0.2–2 µm

Wavelength: µm
 (0.20000–2.0000)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Conditions & Spec sheet

n_is_absolute: true
wavelength_is_vacuum: true
film_thickness: 2 nm
substrate: SiO2

Comments

2 nm-thick germanium film deposited directly on SiO2 substrate

References

A. Ciesielski, L. Skowronski, W.Pacuski, T. Szoplik. Permittivity of Ge, Te and Se thin films in the 200–1500 nm spectral range. Predicting the segregation effects in silver, Mat. Sci. Semicond. Process. 81, 64-67 (2018) (Numerical data kindly provided by Arkadiusz Ciesielski)

Data

[CSV - comma separated]   [TXT - tab separated]   [Full database record]

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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