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High-Q resonance modes observed in a metallic nanocavity

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Title: High-Q resonance modes observed in a metallic nanocavity
Authors: Takemoto, R. Browse this author
Ishihara, N. Browse this author
Kurosawa, H. Browse this author
Jahan, N. A. Browse this author
Asano, T. Browse this author
Liu, X. Browse this author
Nakajima, H. Browse this author
Kumano, H. Browse this author
Suemune, I. Browse this author →KAKEN DB
Issue Date: 4-Nov-2013
Publisher: American Institute of Physics
Journal Title: Applied physics letters
Volume: 103
Issue: 19
Start Page: 191104-1
End Page: 191104-4
Publisher DOI: 10.1063/1.4828351
Abstract: Metallic nanocavities have been actively studied for realizing nanolasers with low threshold. Presence of resonance modes with high cavity Q values is the indication of low internal loss that leads to low threshold lasing. However, cavity Q values observed in metallic nanocavities below lasing threshold remain low at present on the order of 100 to 500. We study the possibility to realize higher resonance Q values with a metallic nanocavity. For probing purpose of cavity modes we propose to employ broad mid-gap-state optical emission of n-type GaAs. With this method we report the observation of a resonance mode with the high Q value of 3800 at room temperature with the metallic nanocavity. The cavity mode is identified as a whispering-gallery mode with finite-element- method simulation.
Rights: Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 103, 191104 (2013) and may be found at
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 末宗 幾夫

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