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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)  
 

Derived optical constants

n   k   logX   logY   eV

Conditions & Spec sheet

n_absolute: true
wavelength_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 optical diapason. 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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