Zobrazeno 1 - 10
of 28
pro vyhledávání: '"B. Al-Nashy"'
Publikováno v:
Results in Physics, Vol 12, Iss , Pp 1492-1494 (2019)
In this work, total (linear and nonlinear) optical absorption from InTl1−xSbx QD structures was studied. It is shown that these Tl-based QD structures have high absorption at long wavelengths. Nonlinear absorption at high power levels was preferred
Externí odkaz:
https://doaj.org/article/15a48d7f603c43c195d55c270e25b664
Autor:
B. Al-Nashy, Sonia Razzaghi, Muwaffaq Abdullah Al-Musawi, H. Rasooli Saghai, Amin H. Al-Khursan
Publikováno v:
Results in Physics, Vol 7, Iss , Pp 2411-2416 (2017)
A theoretical model was presented for linear susceptibility using density matrix theory for Y-configuration of double quantum dots (QDs) system including spontaneously generated coherence (SGC). Two SGC components are included for this system: V, and
Externí odkaz:
https://doaj.org/article/84070895fad2494eb6f77d3606ac4a33
Publikováno v:
Results in Physics, Vol 6, Iss , Pp 189-193 (2016)
A model of the dynamical equations of the density matrix describes double tunnelling between double quantum dot (QD) system states, this is to study Kerr nonlinearity in QD structure. Inhomogeneity in the QD system is included which is not included i
Externí odkaz:
https://doaj.org/article/f243ec2a27ed45a49a50f99290886186
Publikováno v:
Journal of the Korean Physical Society. 78:1084-1088
This work models the Kerr effect in double quantum dot (DQD) ladder-plus-Y system using the density matrix theory. The QD inhomogeneity and wetting layer effect are considered. The Kerr effect is shown to be increased at small pumping where the linea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abf679e687fb4341a9bc19404a4dd4e2
https://doi.org/10.1007/s40042-021-00149-4
https://doi.org/10.1007/s40042-021-00149-4
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems. 233:65-71
A model was presented for linear susceptibility in ladder-plus-Y configuration of double quantum dot system using density matrix theory and including spontaneously generated coherence of Λ-type system. Wetting layer and quantum dot inhomogeneity wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc1054b19f0acd52cc089cf7506acf68
https://doi.org/10.1177/2397791419859159
https://doi.org/10.1177/2397791419859159
Publikováno v:
Journal of Optical Communications.
This work studies the total gain of the InTlAsSb quantum dot structure, which is not studied earlier. Adding thallium to structures makes it emit at larger wavelengths. The nonlinear effect of the injected signal power is examined for three quaternar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::728c2b140fdf59a95f0c8aaffd36406f
https://doi.org/10.1515/joc-2020-0083
https://doi.org/10.1515/joc-2020-0083
Publikováno v:
Pramana. 91
This work discusses lasing without inversion in Y-scheme in a double quantum dot nanostructure. This new type of lasing, which results from the quantum interference of spontaneous emission components, was not discussed earlier in quantum dot nanostru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::970b13ed9d09e47dcad25a0ba8071b5e
https://doi.org/10.1007/s12043-018-1646-6
https://doi.org/10.1007/s12043-018-1646-6
Publikováno v:
Optik. 125:4873-4875
A three-level ladder QD system is used to study Kerr effect in QD structures. Inhomogenous broadening is included where it is shown to be critical in calculating Kerr effect in QDs. Signal detuning is shown to control Kerr dispersion.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8d9e64dbe3840d7f32137387996237e
https://doi.org/10.1016/j.ijleo.2014.04.038
https://doi.org/10.1016/j.ijleo.2014.04.038
Autor:
Amin H. Al-Khursan, B. Al-Nashy
Publikováno v:
Optical and Quantum Electronics. 41:989-995
The nonlinear (third-order) optical gain for quantum-dot structures is derived where the density matrix theory is defined by the inhomogeneous density matrix elements. Thus, the nonlinear gain becomes completely inhomogeneous. The total gain obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::235f95106b4587041fac309fcc35a067
https://doi.org/10.1007/s11082-010-9411-1
https://doi.org/10.1007/s11082-010-9411-1
Autor:
Amin H. Al-Khursan, B. Al-Nashy
Publikováno v:
Selected Topics on Optical Amplifiers in Present Scenario
In 1961, it is suggested that stimulated emission can occur in semiconductors by recombination of carriers that are injected across a p-n junction. This is the backbone in the concept of semiconductor lasers and amplifiers [1]. This concept is connec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd82ecb4aeec53419a2ba4c6184da461
https://doi.org/10.5772/34191
https://doi.org/10.5772/34191
