Photovoltaic probe of cavity polaritons in a quantum cascade structure
Photovoltaic probe of cavity polaritons in a quantum cascade structure
The strong coupling between an intersubband excitation in a quantum cascade structure and a photonic mode of a planar microcavity has been detected by angle-resolved photovoltaic measurements. A typical anticrossing behavior, with a vacuum-field Rabi splitting of 16meV at 78K, has been measured, for an intersubband transition at 163meV. These …