Anomalous Light Absorption by Small Particles

Details Anomalous Light Absorption by Small Particles Anomalous Light Absorption by Small Particles

2009-12-18

arxiv.org/abs/0912.3644v1

Physics

Optics

4 pages in the PRL format, 2 figures

Scientific paper

A new type of resonant light absorption by a small particle (nanocluster) is reported. The problem cannot be described within the commonly used dipole scattering approximation and should be studied with methods based upon the exact Mie solution. It is shown that the absorption cross-section has giant maxima realized at small values of the imaginary part of the complex dielectric permittivity of the particle. The maxima are situated in the vicinity of the plasmon (polariton) resonances and correspond to the regions where the dissipative damping equals the radiative one. The case is similar to the recently introduced anomalous scattering [PRL vol. 97, 263902 (2006)] and exhibits similar peculiarities.

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