Theory of the optical absorption of light carrying orbital angular momentum by semiconductors
We develop a free-carrier theory of the optical absorption of light carrying orbital angular momentum (twisted light) by bulk semiconductors. We obtain the optical transition matrix elements for Bessel-mode twisted light and use them to calculate the wave function of photo-excited electrons to first...
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2009
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v85_n4_p_Quinteiro http://hdl.handle.net/20.500.12110/paper_02955075_v85_n4_p_Quinteiro |
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paper:paper_02955075_v85_n4_p_Quinteiro2023-06-08T15:27:11Z Theory of the optical absorption of light carrying orbital angular momentum by semiconductors We develop a free-carrier theory of the optical absorption of light carrying orbital angular momentum (twisted light) by bulk semiconductors. We obtain the optical transition matrix elements for Bessel-mode twisted light and use them to calculate the wave function of photo-excited electrons to first-order in the vector potential of the laser. The associated net electric currents of first and second-order on the field are obtained. It is shown that the magnetic field produced at the center of the beam for the ℓ=1 mode is of the order of a millitesla, and could therefore be detected experimentally using, for example, the technique of time-resolved Faraday rotation. Copyright © 2009 EPLA. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v85_n4_p_Quinteiro http://hdl.handle.net/20.500.12110/paper_02955075_v85_n4_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 develop a free-carrier theory of the optical absorption of light carrying orbital angular momentum (twisted light) by bulk semiconductors. We obtain the optical transition matrix elements for Bessel-mode twisted light and use them to calculate the wave function of photo-excited electrons to first-order in the vector potential of the laser. The associated net electric currents of first and second-order on the field are obtained. It is shown that the magnetic field produced at the center of the beam for the ℓ=1 mode is of the order of a millitesla, and could therefore be detected experimentally using, for example, the technique of time-resolved Faraday rotation. Copyright © 2009 EPLA. |
| title |
Theory of the optical absorption of light carrying orbital angular momentum by semiconductors |
| spellingShingle |
Theory of the optical absorption of light carrying orbital angular momentum by semiconductors |
| title_short |
Theory of the optical absorption of light carrying orbital angular momentum by semiconductors |
| title_full |
Theory of the optical absorption of light carrying orbital angular momentum by semiconductors |
| title_fullStr |
Theory of the optical absorption of light carrying orbital angular momentum by semiconductors |
| title_full_unstemmed |
Theory of the optical absorption of light carrying orbital angular momentum by semiconductors |
| title_sort |
theory of the optical absorption of light carrying orbital angular momentum by semiconductors |
| publishDate |
2009 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v85_n4_p_Quinteiro http://hdl.handle.net/20.500.12110/paper_02955075_v85_n4_p_Quinteiro |
| _version_ |
1768543799058890752 |