Linear and nonlinear intersubband optical absorption and refractive index changes of asymmetric double semi-parabolic quantum wells

Karimi, M.J.; Keshavarz, Alireza; Poostforush, A.

doi:10.1016/j.spmi.2011.01.003

Cited by 66 publications

(10 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is in good agreement with the results of Refs. [6,12,13]. It can be also seen that the nonlinear term is more enhanced in the SCQW and then, it should be taken into account of its contribution especially for the experimental studies.…”

Section: Resultsmentioning

confidence: 99%

“…Chen et al [12] study the second harmonic generation in the asymmetric coupled quantum wells (ACQWs) theoretically for dierent widths of the right-well and the barrier. Recently, the optical properties of the asymmetric double semiparabolic quantum wells are investigated numerically for typical GaAs/Al x Ga 1−x As [13]. To the best of our knowledge, no work has been done to treat the structure size eect on optical properties of (In,Ga)NGaN coupled QWs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impurity-Related Linear and Nonlinear Optical Absorption Coefficients of Unstrained (In,Ga)N-GaN Symmetric Coupled QWs

Ghazi

Peter

2015

Acta Phys. Pol. A

View full text Add to dashboard Cite

Linear, third-order nonlinear and total optical absorption coecients associated with intra-conduction band in wurtzite unstrained (In,Ga)N-GaN coupled quantum wells are calculated. Based on the eective-mass and the one-band parabolic approximations, the well and the barrier-widths eects are investigated variationally under nite connement potential barrier. The results indicate that the structure size have a great inuence on the optical properties. The results reveal also that larger optical absorption coecients are obtained compared to single quantum well and a signicant red-shift is obtained as the structure size increases. It is found that the modulation of the absorption coecients can be easily obtained by adjusting the barrier and/or the well widths.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impurity-Related Linear and Nonlinear Optical Absorption Coefficients of Unstrained (In,Ga)N-GaN Symmetric Coupled QWs

Ghazi

Peter

2015

Acta Phys. Pol. A

View full text Add to dashboard Cite

show abstract

“…[22][23][24][25][26][27][28][29][30][31][32][33][34] The linear and nonlinear optical absorption in different quantum well shapes have been investigated considerably because of the higher values of the dipole matrix elements and in the hope of obtaining the resonance conditions. The main reason for studying low-dimensional quantum wells is that their nonlinear properties can be strongly enhanced compared with bulk semiconductors, and this is due to the higher quantum confinement effects.…”

Section: Introductionmentioning

confidence: 99%

Linear and nonlinear optical absorption coefficients and refractive index changes in GaN/AlxGa(1−x)N double quantum wells operating at 1.55 μm

Dakhlaoui

2015

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inInfluence of polarization induced electric fields on the wavelength and the refractive index of intersubband transitions in AlN/GaN coupled double quantum wells J. Appl. Phys. 105, 093109 (2009); 10.1063/1.3124373 Near-infrared two-color intersubband transitions in AlN/GaN coupled double quantum wells Refractive-index nonlinearities of intersubband transitions in GaN/AlN quantum-well waveguides J. Appl. Phys. Influence of applied electric fields on the absorption coefficient and subband energy distances of intersubband transitions in AlN/GaN coupled double quantum wells J. Appl. Phys.In the present paper, the linear and nonlinear optical absorption coefficients and refractive index changes between the ground and the first excited states in double GaN/Al x Ga (1Àx) N quantum wells are studied theoretically. The electronic energy levels and their corresponding wave functions are obtained by solving Schr€ odinger-Poisson equations self-consistently within the effective mass approximation. The obtained results show that the optical absorption coefficients and refractive index changes can be red-and blue-shifted through varying the left quantum well width and the aluminum concentration x b2 of the central barrier, respectively. These structural parameters are found to present optimum values for carrying out the transition of 0.8 eV (1.55 lm). Furthermore, we show that the desired transition can also be achieved by replacing the GaN in the left quantum well with Al y Ga (1Ày) N and by varying the aluminum concentration y Al . The obtained results give a new degree of freedom in optoelectronic device applications such as optical fiber telecommunications operating at (1.55 lm). V C 2015 AIP Publishing LLC. [http://dx.

show abstract

“…In recent years, the optical properties of double quantum wells (QWs) have been investigated widely by many authors [3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Chen et al calculated the linear and the thirdorder nonlinear optical absorptions in the asymmetric double triangular QWs [3].…”

Section: Introductionmentioning

confidence: 99%

“…Karimi and Keshavarz investigated the optical properties of the symmetric and asymmetric double semiparabolic QWs [4][5][6]. Karimi et al calculated the behavior of the refractive index changes (RICs) and optical absorption coefficients (ACs) for the asymmetric double semi-parabolic QWs [7]. Karabulutet al studied the ISB electron-related nonlinear optical absorption and nonlinear optical rectification in asymmetric double QWs [8].…”

Section: Introductionmentioning

confidence: 99%

Linear and nonlinear optical properties in asymmetric double semi-V-shaped quantum well

Yesilgül

Ungan

Kasapoğlu

et al. 2015

Physica B: Condensed Matter

View full text Add to dashboard Cite

Linear and nonlinear intersubband optical absorption and refractive index changes of asymmetric double semi-parabolic quantum wells

Cited by 66 publications

References 30 publications

Impurity-Related Linear and Nonlinear Optical Absorption Coefficients of Unstrained (In,Ga)N-GaN Symmetric Coupled QWs

Impurity-Related Linear and Nonlinear Optical Absorption Coefficients of Unstrained (In,Ga)N-GaN Symmetric Coupled QWs

Linear and nonlinear optical absorption coefficients and refractive index changes in GaN/AlxGa(1−x)N double quantum wells operating at 1.55 μm

Linear and nonlinear optical properties in asymmetric double semi-V-shaped quantum well

Contact Info

Product

Resources

About