Optical properties and electromagnetically induced grating in a hybrid semiconductor quantum dot-metallic nanorod system

Naseri, Tayebeh

doi:10.1016/j.physleta.2019.126164

Cited by 15 publications

(6 citation statements)

References 25 publications

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“…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 . In a tripod-type atomic model the appearance of dual EIG is also reported in the presence of an incoherent pump field 45 .…”

Section: Introductionmentioning

confidence: 99%

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

Dutta¹,

Panchadhyayee

Bayal

et al. 2020

Sci Rep

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We propose an atomic model in close-loop configuration, which exhibits controllable symmetric and asymmetric evolution of significantly enhanced diffraction peaks of the weak probe beam in an opto-atomic grating at far-field regime. Such results are obtained by the linear and nonlinear modulation of the intensities of the diffraction peaks as a result of multi-wave-mixing-induced modification of spatially modulated coherence in a closed four-level atomic system. Novelty of the results lies in predicting the diffraction pattern with uniform peak height due to the dominance of the amplitude part of the grating-transfer-function at the condition of exact atom-field resonance, which is unique to the present model. Efficacy of the present scheme is to apply it in producing nonlinear light generated by four-wave-mixing-induced control of spatially modulated coherence effect. The work also finds its importance for its applicability in the field of all-optical devices.

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Section: Introductionmentioning

confidence: 99%

“…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.…”

mentioning

confidence: 99%

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

Dutta¹,

Panchadhyayee

Bayal

et al. 2020

Sci Rep

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“…Here, Δ 1 and Δ 2 are detunings of the gate voltages T 1 and T 2 respectively, and are given as: Δ 1 = ω 24 − ω 1 , Δ 2 = ω 34 − ω 2 and Δ p = ω 14 − ω p is the detuning of the probe field. p t W is the over all electric field experienced by TQD and is the sum of the applied probe electric field and local electric field induced by the polarization of the MNP and is calculated as [38,39]…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Surface plasmon polaritons at an interface between silver and quantum dots hybrid nanocomposite

Waheed¹,

Ali²,

Khan³

et al. 2022

Phys. Scr.

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Surface plasmon polaritons (SPPs) are investigated theoretically at the interface between silver metal and a hybrid system containing silver metal nanoparticles (MNPs) and semiconductor triple quantum dot (STQD). Various properties of SPPs are studied by varying the distance between silver MNP and SQD, radii of the MNP in the hybrid medium, and gate voltage applied to the TQD. A remarkable modification up to 315 µm is obtained in the SPPs’ propagation length by considering different sizes of silver MNPs in the hybrid medium. The wavelength of the SPPs is controlled via changing the distance between the MNPs and TQD, and gate voltages applied to TQD in the hybrid medium. Furthermore, we have studied the effect of various parameters such as gate voltages and radii of the MNPs on the penetration depth of SPPs into both sides of the interface of silver metal and hybrid medium. Plasmonic regions consisting of hybrid medium and silver metal provide multiple dimensions for the generation and control of SPPs. Therefore, it is assumed that these findings may have important applications in bio-sensors, atomic spectroscopy, photovoltaic devices, surface-enhanced Raman spectroscopy, solar cells, and plasmon technology.

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“…In recent years, with the emergence of new materials, i.e. quantum wells (QWs) and quantum dots (QDs) [15][16][17][18], researchers have paid much attention to the FWM process in these materials because of their excellent properties [19,20]. These structures have large electric dipole moments, small effective electric mass, and highly nonlinear optical coefficients in comparison to atomic systems [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Tunneling induced swapping of orbital angular momentum in a quantum dot molecule

Al-Hawary,

R Kadhum,

Abdu Musad Saleh

et al. 2023

Laser Phys.

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In this paper, we have examined the effectiveness exchange of optical vorticity via three-wave mixing (TWM) technique in a four-level quantum dot (QD) molecule by means of the electron tunneling effect. Our analytical analysis demonstrates that the TWM procedure can result in the production of a new weak signal beam that may be absorbed or amplified within the QD molecule. We have taken into account the electron tunneling as well as the relative phase of the applied lights to assess the absorption and dispersion characteristics of the newly generated light. We have discovered that the slow light propagation and signal amplification can be achieved. Our results show that the exchange of the orbital angular momentum of light can transfer from coupling optical vortex light to the new generated light in high efficiency.

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Optical properties and electromagnetically induced grating in a hybrid semiconductor quantum dot-metallic nanorod system

Cited by 15 publications

References 25 publications

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

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

Surface plasmon polaritons at an interface between silver and quantum dots hybrid nanocomposite

Tunneling induced swapping of orbital angular momentum in a quantum dot molecule

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