SPECTRAL-ELLIPSOMETRIC INVESTIGATIONS ON SEMICONDUCTOR RESONATORS

The linear optical response of semiconductor microcavities with embedd ed quantum wells has been investigated by ellipsometry and reflectivit y in the range of the stop-hand including the resonator mode. The expe rimental results are compared with calculated spectra using the transf er-matrix technique. The comparison confirms the effective metal-like behaviour of this non-absorptive system as well as the sensitivity of the response against small variations of the transition energy and pos ition of the quantum wells. The dielectric function of simple Bragg-re flectors and complete resonator structures are presented followed by t he discussion of the observed mode splitting of the reflectivity spect ra. (C) 1998 Elsevier Science S.A.