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Electronics Engineering
Waves Vibrations and Oscillations

Single oscillator energy Eo?

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October 24, 2007 8:01PM

Optical properties of solids are described by the wavelength dependence of the complex refractive index. This is how the medium (the solid) responds to the electromagnetic wave. The dispersion of the real refractive index n(E), where E is the photon energy can be described with the model of many oscillators (electrons), which react to the electromagnetic wave. Simplifying the relations we obtain an equation of a single oscillator with effective parameters, which reflect the contributions of all the oscillators. These parameters are the oscillator strength Ed and the oscillator energy E0. So the oscillator energy is a parameter, connected with the optical properties of the solid and the electron transitions - it is connected with the optical bandgap Eg with the relation E0~1.5Eg.