Investigation of dual electromagnetically induced grating based on spatial modulation in quantum well nanostructures via biexciton coherence

Abstract

A new scheme for obtaining an electromagnetically induced grating (EIG) via biexciton coherence in quantum well nanostructures is developed. It is theoretically shown that exciton spin relaxation and biexciton binding energy have important roles in producing efficient dual electromagnetically induced phase grating. In this structure, due to biexciton coherence, the higher order diffraction intensities of the grating can be observed. Furthermore, it is shown that the efficiency of different orders in the grating patterns could be controlled by biexciton energy renormalization (ESR) and relative phase between the applied laser fields.

Multi-wave-mixing-induced nonlinear modulation of diffraction peaks in an opto-atomic grating

“…Following the generic models in rarefied medium a good number of attempts have been made to explore the phenomenon of EIG in solid state media such as, semiconductor quantum nanostructures [38][39][40][41][42][43][44] . A different method of obtaining dual EIG has been studied on the basis of spatially modulated biexciton coherence in Ref.…”

“…A different method of obtaining dual EIG has been studied on the basis of spatially modulated biexciton coherence in Ref. 40 . Phase-dependent generation of EIG has been addressed also in those works 40,41 .…”

“…40 . Phase-dependent generation of EIG has been addressed also in those works 40,41 . A new scheme based on semiconductor quantum dot and metal nanoparticle hybrid system is proposed to realize EIG 42,43 .…”

Influence of phase diffusion on atomic grating in a three-level ladder-type system in lower-level microwave-driven scheme

“…where, the diffraction order n is defined as q l = L n sin p ( ) [34]. The intensity distribution of the diffracted field can easily be obtained by substituting equation (6) into equation (5).…”