We present nonequilibrium calculations of the Coulomb-mediated carrier-capture time in electrically pumped quantum-well (QW) lasers and demonstrate that carriers are efficiently trapped into the QW at realistic densities. Furthermore, contrary to the common belief that the capture time oscillates strongly with well width, we argue that such oscillations must be heavily damped, since the confined carriers ultimately form a quasi-three-dimensional gas as the number of bound states increases.
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Preisel et al. (1994) studied this question.