Current self-distribution effect in diode lasers: analytic criterion and numerical study

Current self-distribution effects in oxide-confined vertical-cavity surface-emitting lasers

“…1 displays its response to the application of voltage pulses of 1.5 ns duration and different pulse amplitudes V when CSD is included (left column) and neglected (right column). CSD substantially reduces the overshoot of the first spike in the total power and increases the damping of the subsequent relaxation oscillations As V is increased, these effects become less noticeable, in qualitative agreement with (Eliseev et al 1997). The polarization-resolved time traces show the same behaviour, without additional features besides a very slight improvement in the polarization ratio, which may however be artificial due to the lesser damping in the absence of CSD.…”

“…This current self-distribution (CSD) effect partly counteracts SHB, and its most prominent effect (Eliseev et al 1997) is to increase the damping of the relaxation oscillations (ROs) and to reduce the overshoots during the transient dynamics. CSD has been included in some VCSEL models (Gustavsson et al 2002;Jungo et al 2003) that do not take into account polarization dynamics, but it has not been previously considered in polarization-aware models.…”

Nonlinear dynamics of semiconductor lasers with active optical feedback

“…(A.6) also becomes inhomogeneous, ensuring a constant voltage along the laser contact. This is regarded by [6,24,33,34] …”

Controlled polarization switching in intracavity contacted VCSELs

“…In the asymmetric case, the current is more homogeneously spread, yielding a favorable excitation of the fundamental mode of the emitted optical field. This effect of current-self-distribution 6,9,10 is caused by a decrease of the junctions voltage due to the depletion of carriers by the optical mode and hence partially counteracts spatial hole burning.…”