Highly efficient plasmon excitation in graphene-Bi2Te3 heterostructure

Yao Lu, Jingchao Song, Jian Yuan, Lei Zhang, Steve Qing Yang Wu, Wenzhi Yu, Meng Zhao, Cheng Wei Qiu, Jinghua Teng, Kian Ping Loh, Chao Zhang, Qiaoliang Bao

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Graphene plasmons have attracted a lot of attention due to large confinement and small mode volume. However, the graphene-based plasmonic devices are still limited in the practical applications due to relatively small light absorption of graphene and limited light-matter coupling efficiency in general excitation strategy. Here, this work reported a strong plasmonic coupling effect observed in a novel graphene-Bi2Te3 heterostructure on the top of silicon gratings. It is interesting to find that the extinction spectra of the graphene-Bi2Te3 heterostructure has shown three times greater magnitude than that of graphene. This observation is mainly attributed to two factors: first, the coupling efficiency between the graphene and Bi2Te3; second, the higher light absorption in the graphene-Bi2Te3 heterostructure. Moreover, the plasmonic resonance peak of the graphene-Bi2Te3 heterostructure can be easily tuned by changing the grating period just like what happens in the graphene film. In all, this work utilizes the simple silicon grating to couple the light into the graphene-Bi2Te3 heterostructure, and further explores the hybridized Dirac plasmons in the graphene-Bi2Te3 heterostructure. We believe it will stimulate the interest to study the variant plasmonic heterostructure and trigger new terahertz device applications.

Original languageEnglish
Pages (from-to)1842-1846
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume33
Issue number9
DOIs
Publication statusPublished - 1 Sep 2016

Cite this

Lu, Yao ; Song, Jingchao ; Yuan, Jian ; Zhang, Lei ; Wu, Steve Qing Yang ; Yu, Wenzhi ; Zhao, Meng ; Qiu, Cheng Wei ; Teng, Jinghua ; Loh, Kian Ping ; Zhang, Chao ; Bao, Qiaoliang. / Highly efficient plasmon excitation in graphene-Bi2Te3 heterostructure. In: Journal of the Optical Society of America B: Optical Physics. 2016 ; Vol. 33, No. 9. pp. 1842-1846.
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abstract = "Graphene plasmons have attracted a lot of attention due to large confinement and small mode volume. However, the graphene-based plasmonic devices are still limited in the practical applications due to relatively small light absorption of graphene and limited light-matter coupling efficiency in general excitation strategy. Here, this work reported a strong plasmonic coupling effect observed in a novel graphene-Bi2Te3 heterostructure on the top of silicon gratings. It is interesting to find that the extinction spectra of the graphene-Bi2Te3 heterostructure has shown three times greater magnitude than that of graphene. This observation is mainly attributed to two factors: first, the coupling efficiency between the graphene and Bi2Te3; second, the higher light absorption in the graphene-Bi2Te3 heterostructure. Moreover, the plasmonic resonance peak of the graphene-Bi2Te3 heterostructure can be easily tuned by changing the grating period just like what happens in the graphene film. In all, this work utilizes the simple silicon grating to couple the light into the graphene-Bi2Te3 heterostructure, and further explores the hybridized Dirac plasmons in the graphene-Bi2Te3 heterostructure. We believe it will stimulate the interest to study the variant plasmonic heterostructure and trigger new terahertz device applications.",
author = "Yao Lu and Jingchao Song and Jian Yuan and Lei Zhang and Wu, {Steve Qing Yang} and Wenzhi Yu and Meng Zhao and Qiu, {Cheng Wei} and Jinghua Teng and Loh, {Kian Ping} and Chao Zhang and Qiaoliang Bao",
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doi = "10.1364/JOSAB.33.001842",
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Lu, Y, Song, J, Yuan, J, Zhang, L, Wu, SQY, Yu, W, Zhao, M, Qiu, CW, Teng, J, Loh, KP, Zhang, C & Bao, Q 2016, 'Highly efficient plasmon excitation in graphene-Bi2Te3 heterostructure' Journal of the Optical Society of America B: Optical Physics, vol. 33, no. 9, pp. 1842-1846. https://doi.org/10.1364/JOSAB.33.001842

Highly efficient plasmon excitation in graphene-Bi2Te3 heterostructure. / Lu, Yao; Song, Jingchao; Yuan, Jian; Zhang, Lei; Wu, Steve Qing Yang; Yu, Wenzhi; Zhao, Meng; Qiu, Cheng Wei; Teng, Jinghua; Loh, Kian Ping; Zhang, Chao; Bao, Qiaoliang.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 33, No. 9, 01.09.2016, p. 1842-1846.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Lu, Yao

AU - Song, Jingchao

AU - Yuan, Jian

AU - Zhang, Lei

AU - Wu, Steve Qing Yang

AU - Yu, Wenzhi

AU - Zhao, Meng

AU - Qiu, Cheng Wei

AU - Teng, Jinghua

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AU - Zhang, Chao

AU - Bao, Qiaoliang

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AB - Graphene plasmons have attracted a lot of attention due to large confinement and small mode volume. However, the graphene-based plasmonic devices are still limited in the practical applications due to relatively small light absorption of graphene and limited light-matter coupling efficiency in general excitation strategy. Here, this work reported a strong plasmonic coupling effect observed in a novel graphene-Bi2Te3 heterostructure on the top of silicon gratings. It is interesting to find that the extinction spectra of the graphene-Bi2Te3 heterostructure has shown three times greater magnitude than that of graphene. This observation is mainly attributed to two factors: first, the coupling efficiency between the graphene and Bi2Te3; second, the higher light absorption in the graphene-Bi2Te3 heterostructure. Moreover, the plasmonic resonance peak of the graphene-Bi2Te3 heterostructure can be easily tuned by changing the grating period just like what happens in the graphene film. In all, this work utilizes the simple silicon grating to couple the light into the graphene-Bi2Te3 heterostructure, and further explores the hybridized Dirac plasmons in the graphene-Bi2Te3 heterostructure. We believe it will stimulate the interest to study the variant plasmonic heterostructure and trigger new terahertz device applications.

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JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

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