Impedance characteristics of quantum-wells lasers

We derive theoretical expressions for the impedance of quantum-well lasers below and above threshold based on a simple rate equation model. These electrical laser characteristics are shown to he dominated by purely electrical parameters related to carrier captureltransport and carrier re-emission. The results of on-wafer measurements of the impedance of high-speed In0.35 Ga0.65 As/GaAs multiple-quantum-well lasers are shown to be in good agreement with this simple model, allowing us to extract the effective carrier escape time and the effective carrier lifetime, and to estimate the effective carrier captureltransport time.