Abstract
We extend the usual multipolar theory of linear Rayleigh and Raman scattering to include the second-order correction. These terms promise a wealth of information about the shape of a scatterer and yet are insensitive to the scatterer's chirality. Our extended theory might prove especially useful for analyzing samples in which the scatterers have nontrivial shapes but no chiral preference overall, as the zeroth-order theory offers little information about shape and the first-order correction is often quenched for such samples. A basic estimate suggests that our extended theory can be applied to a scatterer as large as with less than error resulting from the neglect of the third- and higher-order corrections. Our results are entirely analytical.
- Received 16 April 2018
DOI:https://doi.org/10.1103/PhysRevA.98.013814
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