INVESTIGADORES
QUINTEIRO ROSEN Guillermo Federico
artículos
Título:
Theory of the optical absorption of light carrying orbital angular momentum by semiconductors
Autor/es:
G. F. QUINTEIRO; P. I. TAMBORENEA
Revista:
EUROPHYSICS LETTERS
Editorial:
EPL ASSOCIATION
Referencias:
Año: 2009 p. 47001 - 47005
ISSN:
0295-5075
Resumen:
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 ell=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.
