Strong coupling of surface plasmon polaritons in monolayer graphene sheet arrays
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Physical SocietyDate
2012-08-16Citation
10.1103/PhysRevLett.109.073901
Physical Review Letters 109.7 (2012): 073901
ISSN
0031-9007 (print); 1079-7114 (online)DOI
10.1103/PhysRevLett.109.073901Funded by
The work is partially supported by the Agency for Science, Technology, and Research (A*STAR) under Grant Nos. 0921450030, 0921540099, 0921540098 and the Ministry of Science and Technology of China under Grant No. 2009DFA52300 for China-Singapore collaborations. F. J. G.-V. acknowledges financial support from the European Research Council under Grant No. 290981 (PLASMONANOQUANTA)Project
info:eu-repo/grantAgreement/EC/FP7/290981Editor's Version
http://dx.doi.org/10.1103/PhysRevLett.109.073901Subjects
FísicaRights
© 2012 American Physical SocietyAbstract
Here we investigate theoretically and numerically the coupling between surface plasmon polaritons (SPPs) in monolayer graphene sheet arrays that have a period much smaller than the wavelength. We show that when the collective SPP is excited with an out-of-phase illumination, the beam tends to propagate toward the opposite direction of the Bloch momentum, reflecting a negative coupling between the constituent SPPs. In contrast, for in-phase illumination, the incident beam is split into two collective SPPs that are highly collimated and display low propagation loss. Moreover, the coupling between the individual SPPs results in a reduction of the modal wavelength of the SPP in comparison with that of a single graphene sheet
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Google Scholar:Wang, Bing
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Zhang, Xiang
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García Vidal, Fco. José
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Yuan, Xiaocong
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Teng, Jinghua
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