Abstract

As it is well known from nonlinear optics, the dielectric function $\text{ε(}\underset{˜}{\text{Q}}\text{,ω)}$ and the resulting polariton dispersion are functions of the excitation intensity. Since in CuCI biexcitons with energy E_Bi may be created by the absorption of two photons provided by different light sources, $\text{ε(}\underset{˜}{\text{Q}}\text{,}\Omega \text{)}$ depends on the density of photons with frequency ω_ℓ, defined such that.

© 1983 Optical Society of America