Electric-field-induced Nonlinear Optical Rectification, Second- and Third-harmonicGeneration in Asymmetrical QuantumWell

The effects of a static electric field on the nonlinear optical rectification,second- and third-harmonic generation in a quantum well described by morse potentialare theoretically investigated. analytical expressions for the optical coefficients dueto intersubband optical transitions with an applied electric field are extracted from thecompact-density matrix approach and iterative scheme. numerical results presented fora typical gaas quantum well reveal the feasibility of control of optical transitions betweenthe size-quantized subbands. in addition, we have to emphasize the fact that theoptical response of the system is remarkably sensitive to the electric field and structuralrange parameter.