Subwavelength metallic cavities with high-Q resonance modes

Ishihara, Nagisa; Kurosawa, Hiroyuki; Takemoto, Ryo; Jahan, Nahid A.; Nakajima, Hideaki; Kumano, Hidekazu; Suemune, Ikuo

Subwavelength metallic cavities with high-Q resonance modes

Ishihara, Nagisa; Kurosawa, Hiroyuki; Takemoto, Ryo et al.

Nanotechnology, 2015, 26(8), 85201

Permalink : https://hdl.handle.net/2115/60632

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アクセス権	open access
URI	https://hdl.handle.net/2115/60632
タイトル	Subwavelength metallic cavities with high-Q resonance modes
著者	Ishihara, Nagisa ; Kurosawa, Hiroyuki ; Takemoto, Ryo ; Jahan, Nahid A. ; Nakajima, Hideaki ; Kumano, Hidekazu ; Suemune, Ikuo
著者名 Ishihara, Nagisa
著者名 Kurosawa, Hiroyuki
著者名 Takemoto, Ryo
著者名 Jahan, Nahid A.
著者名 Nakajima, Hideaki
e-Rad_Researcher 70292042 著者名 Kumano, Hidekazu
e-Rad_Researcher 00112178 著者名 Suemune, Ikuo
言語	英語
キーワード	metallic cavity
	Q factor
	polarization
	temperature dependence
	whispering gallery mode
発行日	2015-02-27
出版者	IOP Publishing
収録物名	Nanotechnology
巻(号)	26(8)
ページ	85201
抄録	Metallic cavities have been extensively studied to realize small-volume nanocavities and nanolasers. However cavity-resonance quality (Q) factors of nanolasers observed up to now remain low (up to similar to 500) due to metal optical absorption. In this paper, we report the observation of highest Q factors of 9000 at low temperature and similar to 6000 near room temperature in a metallic cavity with a probe of sub-bandgap emission of Si-doped GaAs. We analyze the temperature dependence of cavity-mode resonance wavelengths and show that the refractive-index term dominates the measured temperature dependence. We also show that this refractive-index term is cavity-mode dependent and the fitting procedure offers a new method to identify cavity modes. We simulate the metallic cavity with finite-element method and attribute the high-Q cavity mode to a whispering gallery optical mode. This mode is shown to have isotropic polarization dependence of the output emission, which is preferable for quantum information applications.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is an author-created, un-copyedited version of an article accepted for publication in Nanotechnology. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0957-4484/26/8/085201.
PISSN	0957-4484
関連情報	PMID 25648417
関連情報	URI http://iopscience.iop.org/0957-4484/26/8/085201
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1088/0957-4484/26/8/085201