Plasmonic Quantum Dot Nanocavity Laser: Hybrid Modes

Jabir, Jamal N.; Ameen, Sabah M.M.; Al-Khursan, Amin H.

doi:10.1007/s11468-020-01170-2

Cited by 5 publications

(3 citation statements)

References 23 publications

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“…It was reported in previous experimental works [38] that addressed various optical qualities [31, 32, 37, and 39]. Plasmatic nanostructures are the subject of some of them [40][41][42]. Table 1 contains a list of the parameters that were used in our calculations.…”

Section: Resultsmentioning

confidence: 99%

Susceptibility in a Coupled Double Quantum Dot-Metal Nanoparticle System under Standing Wave Field

Akram,

Muwaffaq Abdullah,

El Mustapha Feddi

et al. 2024

UTJsci

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The main purpose of this work is studying the linear Susceptibility in the hybrid nanostructure that composed of a dual quantum dot (DQD) and metal nanoparticle (MNP) hybrid system under a standing-wave field. In our model, we used density matrix equations by taking into our account the interaction between excitons and surface plasmons. The proposed DQD is composed of two QDs. Each QD contains an InAs QD with a disk shape. The interaction between the QD and the wetting layer (WL) is taken into consideration. The application of the standing wave field on DQD-MNP hybrid system was modeled and examined. The susceptibility of thehybridDQD-MNPsystem reduced by the pump field under a standing-wave field. The high susceptibility obtained with a wide MNP radius. An interesting result was shown in the inversion of the grating period with the tunneling component in the conduction band. The smaller size of DQD gave us high susceptibility due to the quantization effect.

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Section: Resultsmentioning

confidence: 99%

Susceptibility in a Coupled Double Quantum Dot-Metal Nanoparticle System under Standing Wave Field

Akram,

Muwaffaq Abdullah,

El Mustapha Feddi

et al. 2024

UTJsci

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“…It is checked with experimental results in 36 and used in many publications that deal with optical properties like 34,35,37,38 . Some of them deal with plasmonic nanostructures [39][40][41] . The parameters used in the calculations are listed in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Energy absorbed from double quantum dot-metal nanoparticle hybrid system

Akram

Abdullah

Al-Khursan

2022

Sci Rep

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This work proposes the double quantum dot (DQD)-metal nanoparticle (MNP) hybrid system for a high energy absorption rate. The structure is modeled using density matrix equations that consider the interaction between excitons and surface plasmons. The wetting layer (WL)-DQD transitions are considered, and the orthogonalized plane wave (OPW) between these transitions is considered. The DQD energy states and momentum calculations with OPW are the figure of merit recognizing this DQD-MNP work. The results show that at the high pump and probe application, the total absorption rate $$({Q}_{tot})$$ ( Q tot ) of the DQD-MNP hybrid system is increased by reducing the distance between DQD-MNP. The high $${Q}_{tot}$$ Q tot obtained may relate to two reasons: first, the WL washes out modes other than the condensated main mode. Second, the high flexibility of manipulating DQD states compared to QD states results in more optical properties for DQD. The $${Q}_{DQD}$$ Q DQD is increased at a small MNP radius on the contrary to the $${Q}_{MNP}$$ Q MNP which is increased at a wider MNP radius. Under high tunneling, a broader blue shift in the $${Q}_{tot}$$ Q tot due to the destructive interference between fields is seen and the synchronization between $${Q}_{MNP}$$ Q MNP and $${Q}_{DQD}$$ Q DQD is destroyed. $${Q}_{tot}$$ Q tot for the DQD-MNP is increased by six orders while $${Q}_{DQD}$$ Q DQD is by eight orders compared to the single QD-MNP hybrid system. The high absorption rate of the DQD-MNP hybrid system comes from the transition possibilities and flexibility of choosing the transitions in the DQD system, which strengthens the transitions and increases the linear and nonlinear optical properties. This will make the DQD-MNP hybrid systems preferable to QD-MNP systems.

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“…Table 3 gives relaxation time in the QDSC system; they cover the experimental results [4,12]. The work simulation is by MAOUD-37 under MATLAB environment [22,23], our laboratory software. It calculates the optical properties of QD structures beginning from energy level calculation with OPW for QD-WL transitions.…”

Section: Resultsmentioning

confidence: 99%

Recombination rates of the double quantum dot solar cell structure

Hadi

Al-Khursan

2021

Phys. Scr.

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This work proposes a double quantum dot structure as an intermediate-band layer to developing solar cell performance for the first time. The continuity-current equation is coupling with the density matrix equations, which are solved numerically to obtain the quantum efficiency. This modeling will calculate the momentum matrix elements of transitions, consider the orthogonalized plane wave for wetting layer- quantum dot transitions, and covers more characteristics than the rate equations by considering all the possible interactions between the states. The results simulate both the excitonic and nonexcitonic (electron-hole) cases. The work emphasizes adding the double quantum dot layer, which gives flexibility in choosing the energy difference between states controlling the recombination rates. The work refers to the importance of orthogonalized plane-wave in solar cell work. In both models, the band-band recombination is high for slight energy differences between the states, confirms the importance of the double quantum dot system to manipulate transitions between states and obtain higher rates. For the electron-hole model, the leakage is high due to the fast recombination of holes. The discrimination between occupations of states is increasing under the excitonic model due to growing hole occupation. In both models, reducing the quantum dot - quantum dot recombinations and increasing all other recombinations will increase the quantum efficiency. The high quantum dot band-to-band rate increases the quantum efficiency. In the excitonic model, lower rates than in the electron-hole model are enough for high quantum efficiency.

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Plasmonic Quantum Dot Nanocavity Laser: Hybrid Modes

Cited by 5 publications

References 23 publications

Susceptibility in a Coupled Double Quantum Dot-Metal Nanoparticle System under Standing Wave Field

Susceptibility in a Coupled Double Quantum Dot-Metal Nanoparticle System under Standing Wave Field

Energy absorbed from double quantum dot-metal nanoparticle hybrid system

Recombination rates of the double quantum dot solar cell structure

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