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Optical properties of metallic films for vertical-cavity optoelectronic devices
Rakic, AD, Djurisic, AB, Elazar, JM and Majewski, ML (1998) Optical properties of metallic films for vertical-cavity optoelectronic devices. Applied Optics, 37 : 5271-5283.
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| Author(s) |
Rakic, AD
Djurisic, AB
Elazar, JM
Majewski, ML
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| Title |
Optical properties of metallic films for vertical-cavity optoelectronic devices
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| Journal name |
Applied Optics
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| Publication date |
1998
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| Volume number |
37
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| Start page |
5271
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| End page |
5283
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| Abstract |
We present models for the optical functions of 11 metals used as mirrors and contacts in optoelectronic and optical devices: noble metals (Ag, Au, Cu), aluminum, beryllium, and transition metals (Cr, Ni, Pd, Pt, Ti, W). We used two simple phenomenological models, the Lorentz-Drude (LD) and the Brendel-Bormann (BB), to interpret both the free-electron and the interband parts of the dielectric response of metals in a wide spectral range from 0.1 to 6 eV. Our results show that the BE model was needed to describe appropriately the interband absorption in noble metals, while for Al, Be, and the transition metals both models exhibit good agreement with the experimental data. A comparison with measurements on surface normal structures confirmed that the reflectance and the phase change on reflection from semiconductor-metal interfaces (including the case of metallic multilayers) can be accurately described by use of the proposed models for the optical functions of metallic films and the matrix method for multilayer calculations. (C) 1998 Optical Society of America.
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| Keyword(s) |
Optics
Light-emitting Diode
Lorentz-drude Model
Dielectric Function
Spectroscopic Ellipsometry
Interband Absorption
Constants
Surface
Lasers
Pd
Aluminum
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