A field-effect quantum-well laser with lateral current injection

Polarization-dependent gain switching in a field-effect quantum-well laser with lateral current injection is studied. We use the k⋅p method for the optical dipole matrix and take into account the intraband relaxation. Gain switching is achieved by the field effect from a gate terminal in a lateral current injection quantum-well laser structure. It is shown that the peak gain exhibits a red shift and the peak-gain amplitude decreases with an increasing electric field for the TE mode. The TM mode is less affected by the external field.