Abstract
Exciton effects on the linear and nonlinear optical absorptions in one-dimensional quantum dots are theoretically studied. The numerical results for the typical GaAs/AlGaAs material show that the optical absorption coefficients are greatly enhanced because of the quantum confinement of exciton. It is over two times bigger than that obtained by without considering exciton effects. Furthermore, the optical absorption saturation intensity can be controlled by the confinement potential frequency and the relaxation time.
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