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dc.contributor.authorXu, Changqing
dc.contributor.authorFarhat, Mohamed
dc.contributor.authorWu, Ying
dc.date.accessioned2021-12-01T11:57:16Z
dc.date.available2021-12-01T11:57:16Z
dc.date.issued2021-11-29
dc.date.submitted2021-09-29
dc.identifier.citationXu, C., Farhat, M., & Wu, Y. (2021). Non-Hermitian electromagnetic double-near-zero index medium in a two-dimensional photonic crystal. Applied Physics Letters, 119(22), 224102. doi:10.1063/5.0073391
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.doi10.1063/5.0073391
dc.identifier.urihttp://hdl.handle.net/10754/673869
dc.description.abstractWe report a general method to design a unique type of a non-Hermitian electromagnetic double-near-zero index medium by a two-dimensional photonic crystal. The synergy of a nonsymmorphic glide symmetry of the lattice, a period-doubling of the unit cell, and the non-Hermitian perturbation of the photonic crystal induces a phase transition in the eigenvalue spectrum. Near the Brillouin zone center, such a photonic crystal is effectively an anisotropic double-near-zero index medium. Along the direction of interest, the real parts of its effective permittivity and permeability are simultaneously near zero, while the imaginary parts of the effective parameters are nonzero values with opposite signs, leading to a real and positive effective refractive index. This medium enables many fascinating applications such as an angular sensor, a coherent perfect absorber, and a laser.
dc.publisherAIP Publishing
dc.relation.urlhttps://aip.scitation.org/doi/10.1063/5.0073391
dc.rightsAll article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleNon-Hermitian electromagnetic double-near-zero index medium in a two-dimensional photonic crystal
dc.typeArticle
dc.contributor.departmentApplied Mathematics and Computational Science Program
dc.contributor.departmentComputer, Electrical and Mathematical Science and Engineering (CEMSE) Division
dc.contributor.departmentWaves in Complex Media Research Group
dc.identifier.journalApplied Physics Letters
dc.eprint.versionPublisher's Version/PDF
dc.identifier.volume119
dc.identifier.issue22
dc.identifier.pages224102
kaust.personXu, Changqing
kaust.personFarhat, Mohamed
kaust.personWu, Ying
dc.date.accepted2021-09-16
refterms.dateFOA2021-12-01T11:58:44Z


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All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.
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