Divergence of dipole sums and the nature of non-Lorentzian exponentially narrow resonances in one-dimensional periodic arrays of nanospheres

Vadim A Markel
2005 Journal of Physics B: Atomic, Molecular and Optical Physics  
Origin and properties of non-Lorentzian spectral lines in linear chains of nanospheres are discussed. The lines are shown to be super-exponentially narrow with the characteristic width proportional to exp[-C(h/a)^3] where C is a numerical constant, h the spacing between the nanospheres in the chain and a the sphere radius. The fine structure of these spectral lines is also investigated.
doi:10.1088/0953-4075/38/7/l02 fatcat:b34ij3omszhvvnpjsbrfx3kxhy