Intradot time scales strongly affect the relaxation dynamics in quantum dot lasers

摘要

We analyze an electron-hole asymmetry model for simultaneous two-state operation in semiconductor quantumndot lasers. From the linearized equations, we determine simple analytical expressions for the relaxation oscillationn(RO) frequencies. Of particular interest is the fact that different expressions for the RO frequencies are obtainedndepending on the relative values of the photon lifetime and the basic time scale of the nonlinear intradot interaction.nIf comparable, we find only one frequency that depends on a combination of the two-state intensities.