Sc. Kan et al., QUANTUM CAPTURE LIMITED MODULATION BANDWIDTH OF QUANTUM-WELL, WIRE, AND DOT LASERS, Applied physics letters, 62(19), 1993, pp. 2307-2309
We investigate the quantum capture limited modulation bandwidths of va
rious lower-dimensional semiconductor lasers. It is shown that, for bu
ried quantum well, wire, and dot lasers, the maximum bandwidth is prop
ortional to the packing density of the active region. For the quantum
wire lasers grown on V-grooved substrates, the maximum bandwidth is en
hanced by the precapture of carriers from three-dimensional states to
two-dimensional states before the capture into the one-dimensional sta
tes.