Mapping gigahertz vibrations in a plasmonic-phononic crystal

Kelf, Timothy A.; Hoshii, Wataru; Otsuka, Paul H.; Sakuma, Hirotaka; Veres, Istvan A.; Cole, Robin M.; Mahajan, Sumeet; Baumberg, Jeremy J.; Tomoda, Motonobu; Matsuda, Osamu; Wright, Oliver B.

Mapping gigahertz vibrations in a plasmonic-phononic crystal

Kelf, Timothy A.; Hoshii, Wataru; Otsuka, Paul H. et al.

New Journal of Physics, 2013, 15, 023013

Permalink : https://hdl.handle.net/2115/52182

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アクセス権	open access
URI	https://hdl.handle.net/2115/52182
タイトル	Mapping gigahertz vibrations in a plasmonic-phononic crystal
著者	Kelf, Timothy A. ; Hoshii, Wataru ; Otsuka, Paul H. ; Sakuma, Hirotaka ; Veres, Istvan A. ; Cole, Robin M. ; Mahajan, Sumeet ; Baumberg, Jeremy J. ; Tomoda, Motonobu ; Matsuda, Osamu ; Wright, Oliver B.
著者名 Kelf, Timothy A.
著者名 Hoshii, Wataru
著者名 Otsuka, Paul H.
著者名 Sakuma, Hirotaka
著者名 Veres, Istvan A.
著者名 Cole, Robin M.
著者名 Mahajan, Sumeet
著者名 Baumberg, Jeremy J.
e-Rad_Researcher 30344485 著者名 Tomoda, Motonobu
e-Rad_Researcher 30239024 著者名 Matsuda, Osamu
e-Rad_Researcher 90281790 著者名 Wright, Oliver B.
言語	英語
発行日	2013-02
出版者	IOP Publishing
収録物名	New Journal of Physics
巻(号)	15
ページ	023013
抄録	We image the gigahertz vibrational modes of a plasmonic-phononic crystal at sub-micron resolution by means of an ultrafast optical technique, using a triangular array of spherical gold nanovoids as a sample. Light is strongly coupled to the plasmonic modes, which interact with the gigahertz phonons by a process akin to surface-enhanced stimulated Brillouin scattering. A marked enhancement in the observed optical reflectivity change at the centre of a void on phononic resonance is likely to be caused by this mechanism. By comparison with numerical simulations of the vibrational field, we identify resonant breathing deformations of the voids and elucidate the corresponding mode shapes. We thus establish scanned optomechanical probing of periodic plasmonic-phononic structures as a new means of investigating their coupled excitations on the nanoscale.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported
PISSN	1367-2630
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1088/1367-2630/15/2/023013