Laser Field Effects on Optical Properties in the Zinc-Blende GaN/AlGaN Quantum Well

Based on the effective mass approximation, the laser field effects on exciton states and optical properties in the zinc-blende (ZB) GaN/AlGaN quantum well (QW) are investigated by means of a variational method. Numerical results show that the ground-state exciton binding energy, the emission energy, the oscillator strength, and the linear optical susceptibility are highly dependent on the well width and laser field amplitude in the ZB GaN QW. The laser field decreases the exciton binding energy and the oscillator strength; however, it also increases the emission energy in the QW for any well width. In particular, our results also show that the laser field has remarkable effects on the exciton states and optical properties in the ZB GaN/AlGaN QW with the small well width case.