Light-induced energy flow at a metal surface

Ole Keller; Kjeld Pedersen

doi:10.1117/12.20565

1 October 1990 Light-induced energy flow at a metal surface

Ole Keller, Kjeld Pedersen

Proceedings Volume 1276, CO2 Lasers and Applications II; (1990) https://doi.org/10.1117/12.20565
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

The stationary energy current density associated with the transmission of light through a metal-vacuum surface is analysed. Combining the Maxwell equations and Boltzmann's transport equation, a generalized Poynting vector of the coupled system of light and conduction electrons is obtained. Within the framework of nonlocal optics, the structure of the electromagnetic and material parts of the Poynting vector is investigated. Dividing the electric field into divergence-free (T) and rotational-free (L) parts, explicit expressions are derived for the o-ca1led TT and TL-parts of the electromagnetic Poynting vector, and for the TT, TL, and LL-parts of the Poynting vector associated with the kinetic energy flow in the electron system. Analytical expressions are derived for the third rank nonlinear response tensor describing the kinetic energy flow for oblique incident light. Special emphasis is devoted to a study of the contributions to the energy current density from collective plasmon and polariton excitations in the frequency range between the longitudinal and transverse plasma edges. A comparison of the present work with previous ones based on the so-called hydrodynamic description is given.

Citation Download Citation

Ole Keller and Kjeld Pedersen "Light-induced energy flow at a metal surface", Proc. SPIE 1276, CO2 Lasers and Applications II, (1 October 1990); https://doi.org/10.1117/12.20565

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