An equivalent circuit model for multielectrode lasers: Potential devices for millimeter-wave applications

Static and dynamic behaviors of multielectrode lasers are, for the first time, studied using an equivalent circuit model. The model is based on the monomode rate equations and the Fermi integral. The potential controlled absorption in the active-region quantum wells and its saturation are included as well as the different carrier recombination mechanisms. The model predicts a higher resonance amplitude and a - 20-dB/decade slope above resonance instead of the commonly known -40-dB/decade slope for direct current modulation and consequently higher cutoff frequencies are to be expected for such structures. We also discuss briefly the impedance level of such structures as well as the different phenomena to be taken into account for a more precise representation. © 1993 John Wiley & sons, Inc.