Intersubband plasmon polaritons in multiple quantum well structures

Radiative intersubband plasmon polaritons in multiple quantum well structur es, with arbitrary number of quantum wells, are discussed theoretically. Th e dispersion relations are derived modeling multiple quantum well structure by uniform uniaxial effective medium and using a full set of the Maxwell e quations for macroscopic (local) electromagnetic fields. Numerical calculat ions are performed for a "GaAs-GaAs/AlGaAs multiple quantum well-air" struc ture corresponding to a typical total internal reflection geometry. Manifes tation of these modes in total internal reflection spectra is also consider ed.