Electronic and intraband optical properties of single quantum rings under intense laser field radiation

Journal Article · Sun Sep 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4894446· OSTI ID:22314366

Radu, A. ^[1]; Kirakosyan, A. A.; Baghramyan, H. M.; Laroze, D. ^[2]

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1. Department of Physics, Politehnica University of Bucharest, 313 Splaiul Independentei, Bucharest RO-060042 (Romania)
2. Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica (Chile)

The influence of an intense laser field on one-electron states and intraband optical absorption coefficients is investigated in two-dimensional GaAs/Ga{sub 0.7}Al{sub 0.3}As quantum rings. An analytical expression of the effective lateral confining potential induced by the laser field is obtained. The one-electron energy spectrum and wave functions are found using the effective mass approximation and exact diagonalization technique. We have shown that changes in the incident light polarization lead to blue- or redshifts in the intraband optical absorption spectrum. Moreover, we found that only blueshift is obtained with increasing outer radius of the quantum ring.

• OSTI ID: 22314366
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ABSORPTION SPECTRA
EFFECTIVE MASS
ELECTRONS
ENERGY SPECTRA
GALLIUM ARSENIDES
LASER RADIATION
OPTICAL PROPERTIES
POLARIZATION
VISIBLE RADIATION