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Abstract:

We examine theoretically the intersubband transitions induced by laser beams of light with orbital angular momentum (twisted light) in semiconductor quantum wells at normal incidence. These transitions become possible in the absence of gratings thanks to the fact that collimated laser beams present a component of the light's electric field in the propagation direction. We derive the matrix elements of the light-matter interaction for a Bessel type twisted light beam represented by its vector potential in the paraxial approximation. Then, we consider the dynamics of photoexcited electrons making intersubband transitions between the first and second subbands of a standard semiconductor quantum well. Finally, we analyze the light-matter matrix elements in order to evaluate which transitions are more favorable for a given orbital angular momentum of the light beam in the case of small semiconductor structures. © 2013 IOP Publishing Ltd.

Registro:

Documento: Artículo
Título:Twisted-light-induced intersubband transitions in quantum wells at normal incidence
Autor:Sbierski, B.; Quinteiro, G.F.; Tamborenea, P.I.
Filiación:Physik-Department, Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany
Departamento de Física and IFIBA, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pab. I, Ciudad de Buenos Aires, Argentina
Palabras clave:Collimated laser beams; Intersubband transitions; Light-matter interactions; Orbital angular momentum; Paraxial approximations; Photoexcited electrons; Propagation direction; Semiconductor structure; Angular momentum; Electric fields; Laser beams; Semiconductor quantum wells
Año:2013
Volumen:25
Número:38
DOI: http://dx.doi.org/10.1088/0953-8984/25/38/385301
Título revista:Journal of Physics Condensed Matter
Título revista abreviado:J Phys Condens Matter
ISSN:09538984
CODEN:JCOME
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09538984_v25_n38_p_Sbierski

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Citas:

---------- APA ----------
Sbierski, B., Quinteiro, G.F. & Tamborenea, P.I. (2013) . Twisted-light-induced intersubband transitions in quantum wells at normal incidence. Journal of Physics Condensed Matter, 25(38).
http://dx.doi.org/10.1088/0953-8984/25/38/385301
---------- CHICAGO ----------
Sbierski, B., Quinteiro, G.F., Tamborenea, P.I. "Twisted-light-induced intersubband transitions in quantum wells at normal incidence" . Journal of Physics Condensed Matter 25, no. 38 (2013).
http://dx.doi.org/10.1088/0953-8984/25/38/385301
---------- MLA ----------
Sbierski, B., Quinteiro, G.F., Tamborenea, P.I. "Twisted-light-induced intersubband transitions in quantum wells at normal incidence" . Journal of Physics Condensed Matter, vol. 25, no. 38, 2013.
http://dx.doi.org/10.1088/0953-8984/25/38/385301
---------- VANCOUVER ----------
Sbierski, B., Quinteiro, G.F., Tamborenea, P.I. Twisted-light-induced intersubband transitions in quantum wells at normal incidence. J Phys Condens Matter. 2013;25(38).
http://dx.doi.org/10.1088/0953-8984/25/38/385301