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.