dorsal/arxiv
View SchemaOblique frozen modes in periodic layered media
| Authors | A. Figotin, I. Vitebskiy |
|---|---|
| Categories | |
| ArXiv ID | physics/0307021 |
| URL | https://arxiv.org/abs/physics/0307021 |
| DOI | 10.1103/PhysRevE.68.036609 |
Abstract
We study the classical scattering problem of a plane electromagnetic wave incident on the surface of semi-infinite periodic stratified media incorporating anisotropic dielectric layers with special oblique orientation of the anisotropy axes. We demonstrate that an obliquely incident light, upon entering the periodic slab, gets converted into an abnormal grazing mode with huge amplitude and zero normal component of the group velocity. This mode cannot be represented as a superposition of extended and evanescent contributions. Instead, it is related to a general (non-Bloch) Floquet eigenmode with the amplitude diverging linearly with the distance from the slab boundary. Remarkably, the slab reflectivity in such a situation can be very low, which means an almost 100% conversion of the incident light into the axially frozen mode with the electromagnetic energy density exceeding that of the incident wave by several orders of magnitude. The effect can be realized at any desirable frequency, including optical and UV frequency range. The only essential physical requirement is the presence of dielectric layers with proper oblique orientation of the anisotropy axes. Some practical aspects of this phenomenon are considered.
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"abstract": "We study the classical scattering problem of a plane electromagnetic wave\nincident on the surface of semi-infinite periodic stratified media\nincorporating anisotropic dielectric layers with special oblique orientation of\nthe anisotropy axes. We demonstrate that an obliquely incident light, upon\nentering the periodic slab, gets converted into an abnormal grazing mode with\nhuge amplitude and zero normal component of the group velocity. This mode\ncannot be represented as a superposition of extended and evanescent\ncontributions. Instead, it is related to a general (non-Bloch) Floquet\neigenmode with the amplitude diverging linearly with the distance from the slab\nboundary. Remarkably, the slab reflectivity in such a situation can be very\nlow, which means an almost 100% conversion of the incident light into the\naxially frozen mode with the electromagnetic energy density exceeding that of\nthe incident wave by several orders of magnitude. The effect can be realized at\nany desirable frequency, including optical and UV frequency range. The only\nessential physical requirement is the presence of dielectric layers with proper\noblique orientation of the anisotropy axes. Some practical aspects of this\nphenomenon are considered.",
"arxiv_id": "physics/0307021",
"authors": [
"A. Figotin",
"I. Vitebskiy"
],
"categories": [
"physics.optics",
"physics.gen-ph"
],
"doi": "10.1103/PhysRevE.68.036609",
"title": "Oblique frozen modes in periodic layered media",
"url": "https://arxiv.org/abs/physics/0307021"
},
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