Crossover from strong to weak exciton confinement and third-harmonic generation on one-dimensional quantum dots

The effect of the electronic intersubband transitions of quantum dots on the linear and nonlinear optical properties of dot-matrix system

“…In these studies linear and nonlinear absorption coefficient and refractive index changes have been investigated. There are also some studies on the higher order nonlinearity such as optical rectification [37], second harmonic [38,39], and third harmonic generation [40,41]. In almost all of these studies the assumption of the equality of dielectric constant of dot and surrounding has been admitted.…”