Bound states in the continuum with high orbital angular momentum in a dielectric rod with periodically modulated permittivity

Bound states in the continuum with high orbital angular momentum in a dielectric rod with... We report bound states in the radiation continuum (BICs) in a single infinitely long dielectric rod with periodically stepwise modulated permittivity alternating from ε1 to ε2. For ε2=1 in air the rod is equivalent to a stack of dielectric disks with permittivity ε1. Because of rotational and translational symmetries the BICs are classified by orbital angular momentum m and the Bloch wave vector β directed along the rod. For m=0 and β=0 the symmetry protected BICs have definite polarization and occur in a wide range of the radius of the rod and the dielectric permittivities. More involved BICs with m≠0,β=0 exist only for a selected radius of the rod at a fixed dielectric constant. The existence of robust Bloch BICs with β≠0,m=0 is demonstrated. Asymptotic limits to a homogeneous rod and to very thin disks are also considered. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Bound states in the continuum with high orbital angular momentum in a dielectric rod with periodically modulated permittivity

Preview Only

Bound states in the continuum with high orbital angular momentum in a dielectric rod with periodically modulated permittivity

Abstract

We report bound states in the radiation continuum (BICs) in a single infinitely long dielectric rod with periodically stepwise modulated permittivity alternating from ε1 to ε2. For ε2=1 in air the rod is equivalent to a stack of dielectric disks with permittivity ε1. Because of rotational and translational symmetries the BICs are classified by orbital angular momentum m and the Bloch wave vector β directed along the rod. For m=0 and β=0 the symmetry protected BICs have definite polarization and occur in a wide range of the radius of the rod and the dielectric permittivities. More involved BICs with m≠0,β=0 exist only for a selected radius of the rod at a fixed dielectric constant. The existence of robust Bloch BICs with β≠0,m=0 is demonstrated. Asymptotic limits to a homogeneous rod and to very thin disks are also considered.
Loading next page...
 
/lp/aps_physical/bound-states-in-the-continuum-with-high-orbital-angular-momentum-in-a-v1CotKs7gn
Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1050-2947
eISSN
1094-1622
D.O.I.
10.1103/PhysRevA.96.013841
Publisher site
See Article on Publisher Site

Abstract

We report bound states in the radiation continuum (BICs) in a single infinitely long dielectric rod with periodically stepwise modulated permittivity alternating from ε1 to ε2. For ε2=1 in air the rod is equivalent to a stack of dielectric disks with permittivity ε1. Because of rotational and translational symmetries the BICs are classified by orbital angular momentum m and the Bloch wave vector β directed along the rod. For m=0 and β=0 the symmetry protected BICs have definite polarization and occur in a wide range of the radius of the rod and the dielectric permittivities. More involved BICs with m≠0,β=0 exist only for a selected radius of the rod at a fixed dielectric constant. The existence of robust Bloch BICs with β≠0,m=0 is demonstrated. Asymptotic limits to a homogeneous rod and to very thin disks are also considered.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Jul 20, 2017

There are no references for this article.

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off