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dc.contributor.authorSakhdari, Maryam
dc.contributor.authorEstakhri, Nasim Mohammadi
dc.contributor.authorBagci, Hakan
dc.contributor.authorChen, Pai-Yen
dc.date.accessioned2018-09-26T13:29:25Z
dc.date.available2018-09-26T13:29:25Z
dc.date.issued2018-08-21
dc.identifier.citationSakhdari M, Estakhri NM, Bagci H, Chen P-Y (2018) Low-Threshold Lasing and Coherent Perfect Absorption in Generalized \nPT\n-Symmetric Optical Structures. Physical Review Applied 10. Available: http://dx.doi.org/10.1103/PhysRevApplied.10.024030.
dc.identifier.issn2331-7019
dc.identifier.doi10.1103/PhysRevApplied.10.024030
dc.identifier.urihttp://hdl.handle.net/10754/628787
dc.description.abstractAchieving exact balance between spatially separated gain and loss is generally regarded as a necessary condition for parity-time- (PT-)symmetric optical systems. We introduce generalized PT- (GPT-)symmetric optical structures, which have an asymmetric and unbalanced gain-loss profile, while exhibiting similar scattering properties and phase transitions as their traditional PT-symmetric counterparts. In particular, we show that the concept of GPT symmetry may help to reduce the threshold gain in achieving newly discovered PT-enabled applications, such as the coherent perfect absorber laser and exceptional points. The concept proposed herein will facilitate the practice of PT-symmetric optical and photonic devices by offering greater design flexibility to tailor gain-loss profiles and their thresholds.
dc.description.sponsorshipP.-Y. C. would like to thank NSF ECCS-1711409 Grant. H.B. would like to thank KAUST CRG-2953 Grant for supporting the research reported in this publication.
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttps://journals.aps.org/prapplied/abstract/10.1103/PhysRevApplied.10.024030
dc.rightsArchived with thanks to Physical Review
dc.titleLow-Threshold Lasing and Coherent Perfect Absorption in Generalized \nPT\n-Symmetric Optical Structures
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalPhysical Review Applied
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, IL, 60607, , United States
dc.contributor.institutionDepartment of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, 19104, , United States
kaust.personBagci, Hakan
kaust.grant.numberCRG-2953
refterms.dateFOA2018-09-27T07:15:56Z


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