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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Autores principales:	Sbierski, B., Quinteiro, G.F., Tamborenea, P.I.
Formato:	JOUR
Materias:	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
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_09538984_v25_n38_p_Sbierski
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_09538984_v25_n38_p_Sbierski
record_format	dspace
spelling	todo:paper_09538984_v25_n38_p_Sbierski2023-10-03T15:51:31Z Twisted-light-induced intersubband transitions in quantum wells at normal incidence Sbierski, B. Quinteiro, G.F. Tamborenea, P.I. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Sbierski, B. Quinteiro, G.F. Tamborenea, P.I. 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.
format	JOUR
author	Sbierski, B. Quinteiro, G.F. Tamborenea, P.I.
author_facet	Sbierski, B. Quinteiro, G.F. Tamborenea, P.I.
author_sort	Sbierski, B.
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
url	http://hdl.handle.net/20.500.12110/paper_09538984_v25_n38_p_Sbierski
work_keys_str_mv	AT sbierskib twistedlightinducedintersubbandtransitionsinquantumwellsatnormalincidence AT quinteirogf twistedlightinducedintersubbandtransitionsinquantumwellsatnormalincidence AT tamboreneapi twistedlightinducedintersubbandtransitionsinquantumwellsatnormalincidence
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Twisted-light-induced intersubband transitions in quantum wells at normal incidence

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