AMPLIFICATION WITHOUT INVERSION IN SEMICONDUCTOR QUANTUM DOT

In this paper, we have realized amplification without inversion (AWI) in quantum dot (QD). A Y-type four-level system of In x Ga 1-x N quantum dot has been obtained and investigated for AWI. It has been shown that, with proper setting of control fields' amplitude, we can obtain reasonable gain. With proper setting of phase difference of control fields and probe field, we can obtain considerable gain in resonant wavelength. We have designed this system by solving the Schrödinger–Poisson equations for In x Ga 1-x N quantum dot in GaN substrate, self-consistently.