Photon Detection by Non Degenerate Two Photon Absorption in GaAs: A Quantum “Leg up” Effect
Fabien Boitier, Jean-Baptiste Dherbecourt, Antoine Godard, E. Rosencher · 2009
Detection at optical communication wavelength is achieved, for the first time, in GaAs phototube by non degenerate two-photon absorption. Signal photon is supported by a pump field, producing a quantum “leg up” effect.