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Title: Observation of trapped light within the radiation continuum

Abstract

The ability to confine light is important both scientifically and technologically. While many light confinement methods exist, they all achieve confinement with materials or systems that forbid outgoing waves. These systems can be implemented by metallic mirrors, by photonic band-gap materials, by highly disordered media (Anderson localization) and, for a subset of outgoing waves, by translational symmetry (total internal reflection) or by rotational or reflection symmetry. Exceptions to these examples exist only in theoretical proposals. Here we predict and show experimentally that light can be perfectly confined in a patterned dielectric slab, even though outgoing waves are allowed in the surrounding medium. Technically, this is an observation of an ‘embedded eigenvalue’—namely, a bound state in a continuum of radiation modes—that is because of symmetry incompatibility. Such a bound state can exist stably in a general class of geometries in which all of its radiation amplitudes vanish simultaneously as a result of destructive interference. This method to trap electromagnetic waves is also applicable to electronic12 and mechanical waves.

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Harvard Univ., Cambridge, MA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1382604
Grant/Contract Number:  
SC0001299; FG02-09ER46577
Resource Type:
Accepted Manuscript
Journal Name:
Nature (London)
Additional Journal Information:
Journal Name: Nature (London); Journal Volume: 499; Journal Issue: 7457; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; Journal ID: ISSN 0028-0836
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; solar (photovoltaic); solar (thermal); solid state lighting; phonons; thermal conductivity; thermoelectric; defects; mechanical behavior; charge transport; spin dynamics; materials and chemistry by design; optics; synthesis (novel materials); synthesis (self-assembly); synthesis (scalable processing)

Citation Formats

Hsu, Chia Wei, Zhen, Bo, Lee, Jeongwon, Chua, Song-Liang, Johnson, Steven G., Joannopoulos, John D., and Soljačić, Marin. Observation of trapped light within the radiation continuum. United States: N. p., 2013. Web. doi:10.1038/nature12289.
Hsu, Chia Wei, Zhen, Bo, Lee, Jeongwon, Chua, Song-Liang, Johnson, Steven G., Joannopoulos, John D., & Soljačić, Marin. Observation of trapped light within the radiation continuum. United States. https://doi.org/10.1038/nature12289
Hsu, Chia Wei, Zhen, Bo, Lee, Jeongwon, Chua, Song-Liang, Johnson, Steven G., Joannopoulos, John D., and Soljačić, Marin. Wed . "Observation of trapped light within the radiation continuum". United States. https://doi.org/10.1038/nature12289. https://www.osti.gov/servlets/purl/1382604.
@article{osti_1382604,
title = {Observation of trapped light within the radiation continuum},
author = {Hsu, Chia Wei and Zhen, Bo and Lee, Jeongwon and Chua, Song-Liang and Johnson, Steven G. and Joannopoulos, John D. and Soljačić, Marin},
abstractNote = {The ability to confine light is important both scientifically and technologically. While many light confinement methods exist, they all achieve confinement with materials or systems that forbid outgoing waves. These systems can be implemented by metallic mirrors, by photonic band-gap materials, by highly disordered media (Anderson localization) and, for a subset of outgoing waves, by translational symmetry (total internal reflection) or by rotational or reflection symmetry. Exceptions to these examples exist only in theoretical proposals. Here we predict and show experimentally that light can be perfectly confined in a patterned dielectric slab, even though outgoing waves are allowed in the surrounding medium. Technically, this is an observation of an ‘embedded eigenvalue’—namely, a bound state in a continuum of radiation modes—that is because of symmetry incompatibility. Such a bound state can exist stably in a general class of geometries in which all of its radiation amplitudes vanish simultaneously as a result of destructive interference. This method to trap electromagnetic waves is also applicable to electronic12 and mechanical waves.},
doi = {10.1038/nature12289},
journal = {Nature (London)},
number = 7457,
volume = 499,
place = {United States},
year = {Wed Jul 10 00:00:00 EDT 2013},
month = {Wed Jul 10 00:00:00 EDT 2013}
}

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