Donor impurity atom effect on the inter-subband absorption coefficient for symmetric double n-type δ-doped GaAs quantum well

Rodríguez-Magdaleno, K.A.; Turkoglu, A.; Ungan, F.; Martı́nez-Orozco, J.C.

doi:10.1016/j.spmi.2021.106988

Cited by 6 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In equation ( 1), we assume all QWs are located along the z-axis. The linear (α (1) ) and nonlinear (α (3) ) optical absorption coefficient can be determined using Ahn's calculations [51], with the expressions:…”

Section: Methodsmentioning

confidence: 99%

“…The fabrication in high quality of δ-doped layers in the quantum wells (QWs) has been achieved thanks to the continuous progresses in epitaxial growth techniques, such as molecular-beam epitaxy and metal-organic chemical vapor infrared detector, modulators etc.. [3,4,[6][7][8][9]. In particular, the inclusion of δ-doped layers in QWs has a great potential for terahertz (THz) technology.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, several studies have focused on the optical properties of δ-doped QWs due to their large potential application for optoelectronic devices. [3,4,[6][7][8][20][21][22][23][24][25][26][27]. For instance, Sari et al [28] investigated the nonlinear optical properties in asymmetric n-type double δ-doped GaAs quantum well.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, Rodríguez-Magdaleno et al [3] investigated the influence of the donor impurity atom and the interwell separation distance between δ-doped QW on the intersubband absorption coefficient for a symmetric double n-type δ-doped GaAs QW. They found that with and without the presence of a donor impurity atom, the AC undergoes an important red-shift as well as a significant decrease in its magnitude.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Disorder effect on intersubband optical absorption of n-type δ-doped quantum well in GaAs

Noverola-Gamas,

Macias Rojas,

Azalim

et al. 2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The inevitable structural disorder associated with the fluctuation of the applied external electric field, laser intensity, and bidimensional density in the low dimensional quantum system can affect noticeably optical absorption properties and the related phenomena. In this work, we study the effect of structural disorder on the optical absorption properties in delta-doped quantum wells (DDQWs). Starting from effective mass approximation and the Thomas-Fermi approach as well as using the matrix density, the electronic structure and the optical absorption coefficients of DDQWs are determined. It is found that the optical absorption properties depend on the strength and the type of structural disorder. Particularly, the bidimensional density disorder suppresses strongly the optical properties. Whilst, the disordered external applied electric field fluctuates moderately in the properties. In contrast, the disordered laser holds absorption properties unalterable. So, our results specify that to have and preserve good optical absorption properties in DDQWs, requires precise control of the bidimensional. Besides, the finding may improve the understanding of the impact of the disorder on the optoelectronic properties based on DDQWs.

show abstract

Section: Methodsmentioning

confidence: 99%