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Statut |
Confirmé |
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Série |
SEM-BESSON |
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Domaines |
cond-mat |
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Date |
Vendredi 22 Novembre 2013 |
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Heure |
10:30 |
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Institut |
IMPMC |
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Salle |
Salle de conférence, 4ème étage, Tour 22-23, UPMC, 4, Place Jussieu, 75005 Paris |
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Nom de l'orateur |
Kondratov |
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Prenom de l'orateur |
Alexei |
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Addresse email de l'orateur |
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Institution de l'orateur |
Institut Chubnikov de cristallographie, Moscou |
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Titre |
Macroscopic view of light pressure on a continuous medium |
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Résumé |
The ambiguity of the macroscopic description of light pressure on a
continuous medium originates from the uncertainty of dividing the
energy-momentum tensor of electromagnetically excited matter into a
material and field parts or, equivalently, the total acting force into
pressure and deformation terms. We show that, although there exists a
continuum of formally correct formulations, one can adopt the appropriate
form of the macroscopic field stress tensor that allows a unified
description of pressure during elementary light-matter interactions, such
as reflection, refraction, absorption, and nonlinear conversion. The
derived simple expressions for the pressure force are compatible with the
polariton momentum hk. The corresponding relation for the
electromagnetic momentum density generalizes Rytov's definition for
right-handed and left-handed frequency dispersive media.
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- seminKONDRATOV2013.pdf (68714 bytes)
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