English

Anisotropy-induced Fano resonance

Optics 2012-02-28 v1 Classical Physics

Abstract

An optical Fano resonance, which is caused by birefringence control rather than frequency selection, is discovered. Such birefringence-induced Fano resonance comes with fast-switching radiation. The resonance condition εt<1/εr\varepsilon_t< 1/\varepsilon_r is revealed and a tiny perturbation in birefringence is found to result in a giant switch in the principal light pole induced near surface plasmon resonance. The loss and size effects upon the Fano resonance have been studied Fano resonance is still pronounced, even if the loss and size of the object increase. The evolutions of the radiation patterns and energy singularities illustrate clearly the sensitive dependence of Fano resonance upon the birefringence.

Cite

@article{arxiv.1202.5613,
  title  = {Anisotropy-induced Fano resonance},
  author = {Cheng-Wei Qiu and Andrey Novitsky and Lei Gao and Jian-Wen Dong and Boris Luk'yanchuk},
  journal= {arXiv preprint arXiv:1202.5613},
  year   = {2012}
}
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