The effect of electron-phonon interaction on optical properties of a triangular quantum wire

The influence of electron-phonon interaction on refractive index changes and absorption coefficients in a GaAs quantum wire with triangular cross-section is investigated by using compact-density-matrix approach and iterative method. The results show that the refractive index changes and absorption coefficients are obviously enhanced and the peak positions shift toward higher energy after considering the electron-phonon interaction. In this paper, we also investigate polaron effect on the energy levels and electric dipole moment matrix elements for different length sides of quantum wire.