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dc.contributor.author
Cuevas, Mauro  
dc.contributor.author
Habil, Mojtaba Karimi  
dc.contributor.author
Zapata Rodríguez, Carlos Javier  
dc.date.available
2022-08-11T10:53:40Z  
dc.date.issued
2021-03  
dc.identifier.citation
Cuevas, Mauro; Habil, Mojtaba Karimi; Zapata Rodríguez, Carlos Javier; Lasing condition for trapped modes in subwavelength-wired PT-symmetric resonators; Optical Society of America; Optics Express; 29; 7; 3-2021; 10192-10208  
dc.identifier.issn
1094-4087  
dc.identifier.uri
http://hdl.handle.net/11336/165096  
dc.description.abstract
The ability to control the laser modes within a subwavelength resonator is of key relevance in modern optoelectronics. This work deals with the theoretical research on optical properties of a PT-symmetric nano-scaled dimer formed by two dielectric wires, one is with loss and the other with gain, wrapped with graphene sheets. We show the existence of two non-radiating trapped modes which transform into radiating modes by increasing the gain-loss parameter. Moreover, these modes reach the lasing condition for suitable values of this parameter, a fact that makes these modes achieve an ultra high quality factor that is manifested on the response of the structure when it is excited by a plane wave. Unlike other mechanisms that transform trapped modes into radiating modes, we show that the variation of gain-loss parameter in the balanced loss-gain structure here studied leads to a variation in the phase difference between induced dipole moments on each wires, without appreciable variation in the modulus of these dipole moments. We provide an approximated method that reproduces the main results provided by the rigorous calculation. Our theoretical findings reveal the possibility to develop unconventional optical devices and structures with enhanced functionality.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Optical Society of America  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Resonators  
dc.subject
PT symmetry  
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Plasmonics  
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Graphene  
dc.subject.classification
Óptica  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Lasing condition for trapped modes in subwavelength-wired PT-symmetric resonators  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-08-09T17:46:58Z  
dc.journal.volume
29  
dc.journal.number
7  
dc.journal.pagination
10192-10208  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Washington  
dc.description.fil
Fil: Cuevas, Mauro. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Habil, Mojtaba Karimi. University Of Tabriz; Irán  
dc.description.fil
Fil: Zapata Rodríguez, Carlos Javier. Universidad de Valencia; España  
dc.journal.title
Optics Express  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.osapublishing.org/oe/abstract.cfm?doi=10.1364/OE.414534  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1364/OE.414534