Abstract
When the effective characteristic electro-optic energy ħ|Λ H|, which is obtained by including the electron-hole interaction in the solid, is very large compared to ħω of the modulating electric field, the line shapes of the field-induced change of dielectric function are the same as those of Franz-Keldysh effect. However, in the low-field and high-frequency limit Δ∈ 2(Ω, E is nearly proportional to the first derivative of the unperturbed dielectric function. It is different from the low-field and low-frequency limit case where Δ∈ 2(Ω, E ) is proportional to the third derivative of the unperturbed dielectric function.
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