Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics

We theoretically investigate the interband transitions and quantum kinetics induced by light carrying orbital angular momentum, or twisted light, in bulk semiconductors. We pose the problem in terms of the Heisenberg equations of motion of the electron populations, and interband and intraband cohere...

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Autores principales: Quinteiro, Guillermo, Tamborenea, Pablo Ignacio
Publicado: 2010
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v82_n12_p_Quinteiro
http://hdl.handle.net/20.500.12110/paper_10980121_v82_n12_p_Quinteiro
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_10980121_v82_n12_p_Quinteiro2023-06-08T16:07:48Z Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics Quinteiro, Guillermo Tamborenea, Pablo Ignacio We theoretically investigate the interband transitions and quantum kinetics induced by light carrying orbital angular momentum, or twisted light, in bulk semiconductors. We pose the problem in terms of the Heisenberg equations of motion of the electron populations, and interband and intraband coherences. Our theory extends the free-carrier semiconductor Bloch equations to the case of photoexcitation by twisted light. The theory is formulated using cylindrical coordinates, which are better suited to describe the interaction with twisted light than the usual Cartesian coordinates used to study regular optical excitation. We solve the equations of motion in the low excitation regime, and obtain analytical expressions for the coherences and populations; with these, we calculate the orbital angular momentum transferred from the light to the electrons and the paramagnetic and diamagnetic electric current densities. © 2010 The American Physical Society. 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. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v82_n12_p_Quinteiro http://hdl.handle.net/20.500.12110/paper_10980121_v82_n12_p_Quinteiro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We theoretically investigate the interband transitions and quantum kinetics induced by light carrying orbital angular momentum, or twisted light, in bulk semiconductors. We pose the problem in terms of the Heisenberg equations of motion of the electron populations, and interband and intraband coherences. Our theory extends the free-carrier semiconductor Bloch equations to the case of photoexcitation by twisted light. The theory is formulated using cylindrical coordinates, which are better suited to describe the interaction with twisted light than the usual Cartesian coordinates used to study regular optical excitation. We solve the equations of motion in the low excitation regime, and obtain analytical expressions for the coherences and populations; with these, we calculate the orbital angular momentum transferred from the light to the electrons and the paramagnetic and diamagnetic electric current densities. © 2010 The American Physical Society.
author Quinteiro, Guillermo
Tamborenea, Pablo Ignacio
spellingShingle Quinteiro, Guillermo
Tamborenea, Pablo Ignacio
Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
author_facet Quinteiro, Guillermo
Tamborenea, Pablo Ignacio
author_sort Quinteiro, Guillermo
title Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
title_short Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
title_full Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
title_fullStr Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
title_full_unstemmed Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
title_sort twisted-light-induced optical transitions in semiconductors: free-carrier quantum kinetics
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v82_n12_p_Quinteiro
http://hdl.handle.net/20.500.12110/paper_10980121_v82_n12_p_Quinteiro
work_keys_str_mv AT quinteiroguillermo twistedlightinducedopticaltransitionsinsemiconductorsfreecarrierquantumkinetics
AT tamboreneapabloignacio twistedlightinducedopticaltransitionsinsemiconductorsfreecarrierquantumkinetics
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