Transient and Steady-State Absorptions of a Weak Probe Field in a Coupled Double Quantum-Well Structure

Abstract

We propose and analyze an efficient scheme for suppressing the absorption of a weak probe field based on intersubband transitions in a four-level asymmetric coupled quantum well (CQW) driven coherently by a probe laser field and a control laser field. We study the steady-state process analytically and numerically, and our results show that the probe absorption can be completely eliminated under the condition of Raman resonance (i.e. two-photon detuning is zero). Besides, we can observe one transparency window without requiring one-or two-photon detuning to exactly vanish. This investigation may provide a possible scheme for EIT in solids by using the CQW.

Optical bistability and multistability in a defect slab doped by GaAs/AlGaAs multiple quantum wells

“…The SQW and SQD due to their wide potential applications in optoelectronics and solid-state quantum information science have been analyzed by many research groups. [47][48][49] The large electric dipole moments due to the small effective electron mass, the great flexibilities in device design by choosing the materials and the structure dimensions, and the high nonlinear optical coefficients make these structures have advantages over the atomic systems. Very recently, Yang et al [47] discovered control of the Goos-Hänchen (GH) shift of a mid-infrared probe beam in a cavity consisting of an asymmetric double quantum well nanostructure.…”

Control of transient gain absorption via tunneling and incoherent pumping in triple quantum dots

“…On the other hand, because transient properties have potential applications in optical switches [32,33], the transient properties of probe fields in atomic systems [34][35][36][37][38][39][40][41][42] and semiconductor nanostructures [43][44][45][46][47] are being widely…”