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


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a616226.pdf


Report Date : Jan 2014


Pagination or Media Count : 22


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