Optical properties of a single quantum well with Pöschl–Teller confinement potential

Hien, Nguyen Dinh

doi:10.1016/j.physe.2022.115504

Cited by 21 publications

(4 citation statements)

References 37 publications

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“…To simplify the measurement of the sensitivity of the PCF, in addition to the wavelength method, the amplitude method is adopted. The sensitivity of the PCF sensor can be expressed by the amplitude sensitivity (7) [39]:…”

Section: Amplitude Sensitivitymentioning

confidence: 99%

“…PCF-SPR sensors are integrated with the superiorities of both the PCF and SPR sensing techniques [4,5]. On the one hand, surface plasmon resonance (SPR) is a physical optical phenomenon that occurs at the metal/dielectric interface, which is extremely sensitive to the RI of the surrounding medium [6][7][8][9]. On the other hand, PCF is a new type of microstructured optical fiber with periodically arranged air holes introduced into the cladding, which has been widely used in fiber optic communication, fluorescence enhancement, and other fields due to the flexibility of the structural design.…”

Section: Introductionmentioning

confidence: 99%

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Ring-Core Photonic Crystal Fiber Sensor Based on SPR for Extra-Wide Refractive Index Detection

Wang

Yang

et al. 2023

Coatings

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Spurred by the rapid development of fiber optic sensing technology, photonic crystal fiber (PCF) sensors based on surface plasmon resonance (SPR) have received widespread attention. However, they can only detect a narrow range, and the coating process is complex. Herein, a wide-range SPR sensor is designed. It consists of a ring-core PCF filled with plasmonic materials. Compared to the process of depositing a coating inside the air hole, the analyte and gold nanowires fill our PCF, thus simplifying the manufacturing complexity. The ring-core structure enhances the directional power transmission between the guided mode and the surface plasmon polariton (SPP) mode. The sensor is numerically analyzed using the finite element method (FEM). The results show that the PCF-SPR sensor has a wavelength sensitivity and amplitude sensitivity of 40,000 nm/RIU and 2141 RIU−1, and the resolution is 2.5 × 10−6 RIU−1 for the detection range of 1.13–1.45. The high-sensitivity sensor boasting a wide refractive index detection range performs better than conventional solid-core PCF-SPR sensors, boding well for biochemical sensing.

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Section: Amplitude Sensitivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ring-Core Photonic Crystal Fiber Sensor Based on SPR for Extra-Wide Refractive Index Detection

Wang

Yang

et al. 2023

Coatings

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“…In the literature, there are a lot of potential profiles to describe the interaction of an electron with the quantum dots. The used potential profiles have different shapes, including harmonic oscillator [23][24][25][26], anharmonic oscillator [27], Coulombic [28], parabolic and inverse square potential [29,30], Kratzer [31], and modified Kratzer [32,33], Morse [34,35], Pöschl-Teller [36][37][38][39][40], Rosen-Morse [41][42][43], Manning-Rosen [44], Gaussian [45], Woods-Saxon [46,47], Hulthen [48,49], the more general exponential cosine screened Coulomb (MGECSC) [50,51], Tietz [52], Hellmann [53], Mathieu [54,55], and inverse square root truncated and deformed exponential potentials [56].…”

Section: Introductionmentioning

confidence: 99%

Interaction of an electron and a uniformly charged spherical donor impurity

Mandal,

Karakoç,

Bayrak

2024

Phys. Scr.

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In this study, we propose an interaction potential between an electron and a uniformly charged spherical donor impurity in a quantum dot and numerically solve the Schrödinger equation using the finite difference method. We investigate the effects of the potential depth, donor radius, temperature, and hydrostatic pressure on the electronic and optical properties of an electron-donor impurity in a quantum dot, including absorption coefficients and the total change in the relative refractive index during the transition of an electron from the ground (1s) to excited (2p) states in the conduction band. Our findings indicate that an increase in donor radius or temperature leads to a red shift in the optical response, holding the parameters constant. Conversely, an increase in potential depth or hydrostatic pressure induces a blue shift in the optical response under the constant parameters.

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“…There have been several studies on the susceptibility of GaAs/Al x Ga 1−x As (0 x 1) semiconductor quantum wires [27,28]. The contribution of Al in the GaAs/Al x Ga 1−x As quantum wire has been demonstrated through the relationship of the parameter (x) in the pseudopotentials [29][30][31][32][33], thus it is associated with the LOphonon and effective mass and sensitivity in expressions calculating the LO-phonon frequency as an essential aspect. However, in this paper, we solely focus on the semiconductor material GaAs at x = 0.…”

Section: Introductionmentioning

confidence: 99%

Dependence temperature on effective mass and susceptibility in quantum well-wires

Van Tan

2024

Phys. Scr.

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In this study, we investigated the simulation impact of carrier density and temperature on properties such as susceptibility and effective mass of electrons in GaAs/Al$_x$Ga$_{1-x}$As quantum-well wires, involving the treatment of Coulomb interaction and the interaction between electrons and holes with longitudinal optical phonons (LO-phonon) on an equal basis. The susceptibility and effective mass were calculated and compared with the results when no phonon coupling was considered. Furthermore, the key findings were compared with results from the sum-rule version of the Singwi–Tosi–Land–Sj$\ddot{o}$lander (STLS) theory, mean-spherical approximation (MSA) theory, and there is a high level of concordance between this formula and experimental values obtained by other researchers. Our results reveal that carrier concentration and temperature significantly affect susceptibility and effective mass of the quantum well-wires in both cases, with LO-phonon contributions. These results contribute to illuminating how Coulomb interactions and exchange-correlation energies influence the susceptibility and effective mass of GaAs/Al$_x$Ga$_{1-x}$As across a broad range of temperature and carrier density conditions.

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Optical properties of a single quantum well with Pöschl–Teller confinement potential

Cited by 21 publications

References 37 publications

Ring-Core Photonic Crystal Fiber Sensor Based on SPR for Extra-Wide Refractive Index Detection

Ring-Core Photonic Crystal Fiber Sensor Based on SPR for Extra-Wide Refractive Index Detection

Interaction of an electron and a uniformly charged spherical donor impurity

Dependence temperature on effective mass and susceptibility in quantum well-wires

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