title: Microcavity polariton splitting of intersubband transitions.
abstract: The optical response of the intersubband excitation of multiple two-dimensional electron gases within a semiconductor microcavity has been studied through angle-dependent reflectance measurements. Using a resonator based on total internal reflection, a clear splitting of about 14 meV of the coupled intersubband cavity modes is observed from 10 K to room temperature, with resulting polaritonlike dispersion. The experimental findings are in good agreement with theoretical calculations performed in a transfer-matrix formalism.
authors.affiliation: NEST-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa, Italy.
authors.forename: Dimitri
authors.initials: D
authors.lastname: Dini
authors.forename: Rüdeger
authors.initials: R
authors.lastname: Köhler
authors.forename: Alessandro
authors.initials: A
authors.lastname: Tredicucci
authors.forename: Giorgio
authors.initials: G
authors.lastname: Biasiol
authors.forename: Lucia
authors.initials: L
authors.lastname: Sorba