Direct observation of surface plasmon far field for regular surface ripple formation by femtosecond laser pulse irradiation of gold nanostructures on silicon substrates

Go Obara; Yuto Tanaka; Nikolay N. Nedyalkov; Mitsuhiro Terakawa; Minoru Obara

doi:10.1063/1.3624925

Direct observation of surface plasmon far field for regular surface ripple formation by femtosecond laser pulse irradiation of gold nanostructures on silicon substrates

Go Obara, Yuto Tanaka, Nikolay N. Nedyalkov, Mitsuhiro Terakawa, Minoru Obara

Department of Electronics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

We have directly observed the interference ripple pattern between surface plasmon far field by gold nanosphere and the incident laser on silicon substrate. We explained the ripple formation using three-dimensional finite-difference time-domain simulation method. Nanosphere is an origin for regular ripple formation due to Mie scattering. We present a new method to control the plasmonic far-field pattern using an arbitrary gold nanostructure on the silicon substrate. Previously, the formed ripples were not regular but wavy because they were formed incoherently through the self organization process originating from the random surface roughness. The ripple structure was well controlled coherently.

Original language	English
Article number	061106
Journal	Applied Physics Letters
Volume	99
Issue number	6
DOIs	https://doi.org/10.1063/1.3624925
Publication status	Published - 2011 Aug 8

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3624925

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title = "Direct observation of surface plasmon far field for regular surface ripple formation by femtosecond laser pulse irradiation of gold nanostructures on silicon substrates",

abstract = "We have directly observed the interference ripple pattern between surface plasmon far field by gold nanosphere and the incident laser on silicon substrate. We explained the ripple formation using three-dimensional finite-difference time-domain simulation method. Nanosphere is an origin for regular ripple formation due to Mie scattering. We present a new method to control the plasmonic far-field pattern using an arbitrary gold nanostructure on the silicon substrate. Previously, the formed ripples were not regular but wavy because they were formed incoherently through the self organization process originating from the random surface roughness. The ripple structure was well controlled coherently.",

author = "Go Obara and Yuto Tanaka and Nedyalkov, {Nikolay N.} and Mitsuhiro Terakawa and Minoru Obara",

note = "Funding Information: This work is supported by a Grant-In-Aid for Scientific Research B (23360161) and partially by a Grant-In-Aid for the Global Center of Excellence for High-Level Global Cooperation for Leading-Edge Platform on Access Spaces, both from the Ministry of Education, Culture, Sport, Science and Technology of Japan. Y.T. is grateful for the JSPS Fellowship for Young Scientists.",

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AU - Obara, Go

AU - Tanaka, Yuto

AU - Nedyalkov, Nikolay N.

AU - Terakawa, Mitsuhiro

AU - Obara, Minoru

N1 - Funding Information: This work is supported by a Grant-In-Aid for Scientific Research B (23360161) and partially by a Grant-In-Aid for the Global Center of Excellence for High-Level Global Cooperation for Leading-Edge Platform on Access Spaces, both from the Ministry of Education, Culture, Sport, Science and Technology of Japan. Y.T. is grateful for the JSPS Fellowship for Young Scientists.

PY - 2011/8/8

Y1 - 2011/8/8

N2 - We have directly observed the interference ripple pattern between surface plasmon far field by gold nanosphere and the incident laser on silicon substrate. We explained the ripple formation using three-dimensional finite-difference time-domain simulation method. Nanosphere is an origin for regular ripple formation due to Mie scattering. We present a new method to control the plasmonic far-field pattern using an arbitrary gold nanostructure on the silicon substrate. Previously, the formed ripples were not regular but wavy because they were formed incoherently through the self organization process originating from the random surface roughness. The ripple structure was well controlled coherently.

AB - We have directly observed the interference ripple pattern between surface plasmon far field by gold nanosphere and the incident laser on silicon substrate. We explained the ripple formation using three-dimensional finite-difference time-domain simulation method. Nanosphere is an origin for regular ripple formation due to Mie scattering. We present a new method to control the plasmonic far-field pattern using an arbitrary gold nanostructure on the silicon substrate. Previously, the formed ripples were not regular but wavy because they were formed incoherently through the self organization process originating from the random surface roughness. The ripple structure was well controlled coherently.

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Direct observation of surface plasmon far field for regular surface ripple formation by femtosecond laser pulse irradiation of gold nanostructures on silicon substrates

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