Optical constants of Be (Beryllium)
Svechnikov et al. 2020: n,k 0.00496-0.0608 µm
Complex refractive index (n+ik)
Derived optical constants
Conditions & Spec sheet
n_absolute: true wavelength_vacuum: true
Optical constants are derived from the initial data that include measurements of the transmittance of two free-standing Be films with thicknesses of 70 nm and 152 nm, as well as reflectometric measurements of similar films on a substrate.
M. Svechnikov, N. Chkhalo, A. Lopatin, R. Pleshkov, V. Polkovnikov, N. Salashchenko, F. Schäfers, M.G. Sertsu, A. Sokolov, N. Tsybin. Optical constants of sputtered beryllium thin films determined from photoabsorption measurements in the spectral range 20.4–250 eV, J. Synchrotron Rad. 27, 75-82 (2020)