Twisted-light-induced intersubband transitions in quantum wells at normal incidence
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...
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2013
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09538984_v25_n38_p_Sbierski http://hdl.handle.net/20.500.12110/paper_09538984_v25_n38_p_Sbierski |
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paper:paper_09538984_v25_n38_p_Sbierski2023-06-08T15:55:39Z Twisted-light-induced intersubband transitions in quantum wells at normal incidence Quinteiro, Guillermo Tamborenea, Pablo Ignacio 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 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. Fil:Quinteiro, G.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tamborenea, P.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09538984_v25_n38_p_Sbierski http://hdl.handle.net/20.500.12110/paper_09538984_v25_n38_p_Sbierski |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Quinteiro, Guillermo Tamborenea, Pablo Ignacio Twisted-light-induced intersubband transitions in quantum wells at normal incidence |
| topic_facet |
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 |
| description |
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. |
| author |
Quinteiro, Guillermo Tamborenea, Pablo Ignacio |
| author_facet |
Quinteiro, Guillermo Tamborenea, Pablo Ignacio |
| author_sort |
Quinteiro, Guillermo |
| title |
Twisted-light-induced intersubband transitions in quantum wells at normal incidence |
| title_short |
Twisted-light-induced intersubband transitions in quantum wells at normal incidence |
| title_full |
Twisted-light-induced intersubband transitions in quantum wells at normal incidence |
| title_fullStr |
Twisted-light-induced intersubband transitions in quantum wells at normal incidence |
| title_full_unstemmed |
Twisted-light-induced intersubband transitions in quantum wells at normal incidence |
| title_sort |
twisted-light-induced intersubband transitions in quantum wells at normal incidence |
| publishDate |
2013 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09538984_v25_n38_p_Sbierski http://hdl.handle.net/20.500.12110/paper_09538984_v25_n38_p_Sbierski |
| work_keys_str_mv |
AT quinteiroguillermo twistedlightinducedintersubbandtransitionsinquantumwellsatnormalincidence AT tamboreneapabloignacio twistedlightinducedintersubbandtransitionsinquantumwellsatnormalincidence |
| _version_ |
1768542700176408576 |