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Optical Constants of Germanium
Applied Optics, 1967The authors have attempted to assess the disagreement of various investigators on the optical properties of germanium in the far uv. The analyis subjected the reported data, out to about 25 eV, to the following tests: (1) an internal consistency check when possible by applying the Kronig-Kramers dispersion relations to the optical constants; (2) an ...
R E, Lavilla, H, Mendlowitz
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Intrinsic optical constants of aluminum
Applied Optics, 1987Des resultats experimentaux obtenus dans trois laboratoires differents ont donne, apres des corrections dues a la couche d'oxyde, des constantes optiques identiques dans le domaine spectral 350-650 ...
Z, Bodó, G, Gergely
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Elasto-optical constants of Si
Physical Review B, 1993The three independent components of the piezo-optical tensor P ijkl (ω) have been determined in uniaxially stressed Si using rotating-analyzer ellipsometry. This tensor, with only three complex independent components in the case of Si, links the changes in the real and imaginary parts of the dielectric tensor Δe ij (ω) to an arbitrary stress X=X ki [i.
, Etchegoin, , Kircher, , Cardona
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Il Nuovo Cimento B Series 11, 1977
The optical constants for both polarizations of light (E‖C andE⊥C) in e-GaSe have been studied between 30 cm−1 and 22000 cm−1, at room temperature. In the region of the band gap absorption edge, data are given down to 2 K. Infra-red data forE⊥C andE‖C in the (200÷300) cm−1 range have been obtained by reflectivity measurements and Kramers-Kronig ...
R. Le Toullec +3 more
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The optical constants for both polarizations of light (E‖C andE⊥C) in e-GaSe have been studied between 30 cm−1 and 22000 cm−1, at room temperature. In the region of the band gap absorption edge, data are given down to 2 K. Infra-red data forE⊥C andE‖C in the (200÷300) cm−1 range have been obtained by reflectivity measurements and Kramers-Kronig ...
R. Le Toullec +3 more
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Il Nuovo Cimento B Series 10, 1970
The high-frequency optical constants of graphite are computed from electron energy loss results by using a dispersion relation for anisotropic materials. The values of ɛ⊥(ω) are in reasonable agreement with those obtained by Taft and Philipp from optical measurements.
E. Tosatti, F. Bassani
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The high-frequency optical constants of graphite are computed from electron energy loss results by using a dispersion relation for anisotropic materials. The values of ɛ⊥(ω) are in reasonable agreement with those obtained by Taft and Philipp from optical measurements.
E. Tosatti, F. Bassani
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Physical Review, 1960
A calculation of the interband contribution to the frequency dependent dielectric constant of metals is attempted based on a specific model. The frequency region near the threshold for the interband transitions is considered. Emphasis in the model is laid on the bending of the energy bands near the Brillouin zone boundary. Attention is focused on cases
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A calculation of the interband contribution to the frequency dependent dielectric constant of metals is attempted based on a specific model. The frequency region near the threshold for the interband transitions is considered. Emphasis in the model is laid on the bending of the energy bands near the Brillouin zone boundary. Attention is focused on cases
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Japanese Journal of Applied Physics, 1997
The complex dielectric functions, ε(E)=ε 1(E)+ iε 2(E), of ZnO have been measured by spectroscopic ellipsometry (SE) in the photon-energy range between 1.5 and 5.0 eV at room temperature. The SE measurements are carried out on the surface parallel to the optic axis c, which allows the determination of ...
Hisashi Yoshikawa Hisashi Yoshikawa +1 more
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The complex dielectric functions, ε(E)=ε 1(E)+ iε 2(E), of ZnO have been measured by spectroscopic ellipsometry (SE) in the photon-energy range between 1.5 and 5.0 eV at room temperature. The SE measurements are carried out on the surface parallel to the optic axis c, which allows the determination of ...
Hisashi Yoshikawa Hisashi Yoshikawa +1 more
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Optical constants of polyacetylene
Synthetic Metals, 1985Abstract Optical constants of neat cis - and trans -(CH) x and (CD) x films are determined by measuring infrared, visible and ultraviolet spectra of the film and its thickness directly. The absorption coefficient of cis -(CH) x at the absorption maximum 18 500 cm −1 was (1.5 ± 0.1) × 10 5 cm −1 and that of trans -(CH) x at 15 500 ...
H. Fujimoto +3 more
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