Terahertz beam focusing based on plasmonic waveguide scattering

Yasuaki Monnai; Kristian Altmann; Christian Jansen; Martin Koch; Hartmut Hillmer; Hiroyuki Shinoda

doi:10.1063/1.4759042

Terahertz beam focusing based on plasmonic waveguide scattering

Yasuaki Monnai, Kristian Altmann, Christian Jansen, Martin Koch, Hartmut Hillmer, Hiroyuki Shinoda

研究成果: Article › 査読

20 被引用数 (Scopus)

抄録

We demonstrate free-space focusing of terahertz (THz) radiation by scattering plasmonic surface-waves into the air. We use a grating of shallow holes which contains non-equidistant defects which act as scattering centers. The scattering occurs with defined phase delays such that the waves emitted in free-space interfere constructively to form a focus above the waveguide surface. In contrast to conventional lenses, this structure does not require any free-space on its backside and has great potential for integrated THz optics.

本文言語	English
論文番号	151116
ジャーナル	Applied Physics Letters
巻	101
号	15
DOI	https://doi.org/10.1063/1.4759042
出版ステータス	Published - 2012 10月 8
外部発表	はい

ASJC Scopus subject areas

物理学および天文学（その他）

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10.1063/1.4759042

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title = "Terahertz beam focusing based on plasmonic waveguide scattering",

abstract = "We demonstrate free-space focusing of terahertz (THz) radiation by scattering plasmonic surface-waves into the air. We use a grating of shallow holes which contains non-equidistant defects which act as scattering centers. The scattering occurs with defined phase delays such that the waves emitted in free-space interfere constructively to form a focus above the waveguide surface. In contrast to conventional lenses, this structure does not require any free-space on its backside and has great potential for integrated THz optics.",

author = "Yasuaki Monnai and Kristian Altmann and Christian Jansen and Martin Koch and Hartmut Hillmer and Hiroyuki Shinoda",

note = "Funding Information: The research was partly supported by Grant-in-Aid for the JSPS Fellows (22-4238) and National Institute of Information and Communications Technology (NICT) 13701.",

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AU - Monnai, Yasuaki

AU - Altmann, Kristian

AU - Jansen, Christian

AU - Koch, Martin

AU - Hillmer, Hartmut

AU - Shinoda, Hiroyuki

N1 - Funding Information: The research was partly supported by Grant-in-Aid for the JSPS Fellows (22-4238) and National Institute of Information and Communications Technology (NICT) 13701.

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N2 - We demonstrate free-space focusing of terahertz (THz) radiation by scattering plasmonic surface-waves into the air. We use a grating of shallow holes which contains non-equidistant defects which act as scattering centers. The scattering occurs with defined phase delays such that the waves emitted in free-space interfere constructively to form a focus above the waveguide surface. In contrast to conventional lenses, this structure does not require any free-space on its backside and has great potential for integrated THz optics.

AB - We demonstrate free-space focusing of terahertz (THz) radiation by scattering plasmonic surface-waves into the air. We use a grating of shallow holes which contains non-equidistant defects which act as scattering centers. The scattering occurs with defined phase delays such that the waves emitted in free-space interfere constructively to form a focus above the waveguide surface. In contrast to conventional lenses, this structure does not require any free-space on its backside and has great potential for integrated THz optics.

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Terahertz beam focusing based on plasmonic waveguide scattering

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