Linear, nonlinear, and total absorption coefficient and refractive index changes of double-quantum well (DQW) systems are studied theoretically in the presence of external static electric field applied along the growth direction. The analytical expression for the linear and nonlinear optical properties is obtained using density matrix method. Emphasis is laid on the effect of asymmetry in the shapes of DQW system on optical properties. Some interesting results are obtained and explained.
"Asymmetric effects on the optical properties of double-quantum well systems," Optical Engineering 53(2), 027105 (28 February 2014). https://doi.org/10.1117/1.OE.53.2.027105