Polariton Curves in Amorphous Quartz Doped with Ions of Erbium Er3+

The Lorentz model is used for describing dispersion properties of electromagnetic waves in amorphous quartz doped with rare-earth metal ions. The form of Maxwell equations is established for dielectric media with spatially ordered impurity centers. The absorption spectra of erbium ions Er³⁺ introduced in amorphous quartz are analyzed. The dispersion dependences of polaritonic waves in the impurity amorphous quartz are determined on the basis of the model of interaction between electromagnetic waves and resonance electronic states of Er³⁺ ions. The features of polariton curves and parameters of unitary polaritons, for which the refraction index is unity, are found. The conditions are analyzed for optimizing the pumping of laser generation levels for laser system, constructed on the base of amorphous quartz, doped with Er³⁺ ions. It is shown that fiber-optic laser with Er³⁺ ions can be used for implementation of photons-to-scalar bosons conversion. The example of possible experimental scheme for observation of photon-paraphoton conversion is given.

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