Linear and nonlinear optical absorption coefficients of two-electron spherical quantum dot with parabolic potential

Çakır, Bekir; Yakar, Yusuf; Özmen, Ayhan

doi:10.1016/j.physb.2014.11.026

Cited by 38 publications

(2 citation statements)

References 59 publications

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“…We have set ℏ=e=m 0 =a 0 =1 and perform our calculations in atomic unit. The parabolic confinement potential has been utilized in the study of optical properties of doped QDs by Ç akir et al [17,19]. Recently, Khordad and his coworkers introduced a new type of confinement potential for spherical QD's called Modified Gaussian Potential (MGP) [52,53].…”

Section: Methodsmentioning

confidence: 99%

Polarizabilities of Impurity Doped Quantum Dots Under Pulsed Field: Role of Multiplicative White Noise

Saha¹,

Ghosh

2015

Braz J Phys

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We perform a rigorous analysis of the profiles of a few diagonal and off-diagonal components of linear (α xx , α yy , α xy , and α yx ), first nonlinear (β xxx , β yyy , β xyy , and β yxx ), and second nonlinear (γ xxxx , γ yyyy , γ xxyy , and γ yyxx ) polarizabilities of quantum dots exposed to an external pulsed field. Simultaneous presence of multiplicative white noise has also been taken into account. The quantum dot contains a dopant represented by a Gaussian potential. The number of pulse and the dopant location have been found to fabricate the said profiles through their interplay. Moreover, a variation in the noise strength also contributes evidently in designing the profiles of above polarizability components. In general, the off-diagonal components have been found to be somewhat more responsive to a variation of noise strength. However, we have found some exception to the above fact for the offdiagonal β yxx component. The study projects some pathways of achieving stable, enhanced, and often maximized output of linear and nonlinear polarizabilities of doped quantum dots driven by multiplicative noise.

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Section: Methodsmentioning

confidence: 99%

Polarizabilities of Impurity Doped Quantum Dots Under Pulsed Field: Role of Multiplicative White Noise

Saha¹,

Ghosh

2015

Braz J Phys

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“…We have to stress that the agreement between the results obtained via the two methods was perfect. Then, the first-order linear, third-order nonlinear, and total absorption coefficients (ACs) for the transitions between the ground and first excited states of electron confined within DMQW by following the standard density matrix formalism combined with the perturbation expansion method are obtained, respectively, as follows [9], [19], [20], [21], [31], [32], [33], [34]βfalse(1false)false(Epfalse)badbreakafter=Epħ0.2emμ0εR0.2emfalse|M12false|20.2emσv0.2emnormalΩ12false(E12badbreakafter−Epfalse)2badbreakafter+normalΩ1220.2em,βfalse(3false)false(Ep,Ifalse)badbreakafter=badbreakafter−0.2em20.2emI0.2emβfalse(1false)false(Epfalse)ε00.2emn…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Optical characterization of laser-driven double Morse quantum wells

Kasapoğlu

Şakiroğlu

Sarı

et al. 2019

Heliyon

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In this study, the first-order linear, third-order nonlinear, and total absorption coefficients for the intersubband transition between the two lower-lying electronic levels in both symmetric and asymmetric double Morse quantum wells under the non-resonant high-frequency intense laser field are investigated. The study takes into account the effects of the structure parameters. The results show that the electronic and also accordingly optical properties of the structures which we focus on can be adjustable to obtain a convenient response to certain studies or purposes by changing the applied external field and optical intensity as well as structure parameters.

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Effect of position-dependent effective mass on optical properties of spherical nanostructures

2015

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Linear and nonlinear optical absorption coefficients of two-electron spherical quantum dot with parabolic potential

Cited by 38 publications

References 59 publications

Polarizabilities of Impurity Doped Quantum Dots Under Pulsed Field: Role of Multiplicative White Noise

Polarizabilities of Impurity Doped Quantum Dots Under Pulsed Field: Role of Multiplicative White Noise

Optical characterization of laser-driven double Morse quantum wells

Effect of position-dependent effective mass on optical properties of spherical nanostructures

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