Accession Number:

ADA616226

Title:

Theoretical Criteria for Scattering Dark States in Nanostructured Particles

Descriptive Note:

Journal article

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF PHYSICS

Personal Author(s):

• Hsu, Chia Wei
• DeLacy, Brendan G.
• Johnson, Steven G.
• Joannopoulos, John D.
• Soljacic, Marin

Report Date:

2014-01-01

Pagination or Media Count:

22.0

Abstract:

Nanostructures with multiple resonances can exhibit a suppressed or even completely eliminated scattering of light, called a scattering dark state. We describe this phenomenon with a general treatment of light scattering from a multi-resonant nanostructure that is spherical or non-spherical but subwavelength in size. With multiple resonances in the same channel i.e. same angular momentum and polarization, coherent interference always leads to scattering dark states in the low-absorption limit regardless of the system details. The coupling between resonances is inevitable and can be interpreted as arising from far-field or near-field. This is a realization of coupled-resonator-induced transparency in the context of light scattering, which is related to but different from Fano resonances. Explicit examples are given to illustrate these concepts.

Descriptors:

• *LIGHT SCATTERING
• NANOSTRUCTURES
• RESONANCE

Subject Categories:

• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE