Direct capture of carriers from the wetting layer to the most confined states is discussed in this paper. This channel for carrier scattering was recently used to fit typical P-I curves of quantum dot lasers. Here new numerical expressions for the escape times accounting for the carriers added by the direct channel are introduced and evaluated, and insights of the influence of these additional carriers on the continuous and pulsed laser emission spectrum are given.
Direct capture; direct modulation; quantum dot laser
