2D spatial distribution of probe absorption in a triple semiconductor quantum well nanostructure
Ali Raheli, Hamid Reza Hamedi, Mostafa Sahrai
We investigate the two-dimensional (2D) position-dependent probe absorption in a triple semiconductor quantum well (SQW) structure driven coherently by two orthogonal standing-wave fields. Under weak probe field approximation and utilizing the density matrix approach, an analytical solution is presented for the probe linear susceptibility which clarifies directly the spatial-dependent nature of the probe absorption. Then, the distribution of probe absorption in 2D is numerically explored. It is found that 2D absorption spectra are very sensitive to the intensity and frequency detuning of standing-wave fields which can result in various 2D localization structures in one period of standing waves in the x – y plane.
Laser Physics Letters•Sep 9, 2015•5 citations