|
Hokkaido University Collection of Scholarly and Academic Papers >
Research Institute for Electronic Science >
Peer-reviewed Journal Articles, etc >
Subwavelength metallic cavities with high-Q resonance modes
| Title: | Subwavelength metallic cavities with high-Q resonance modes |
| Authors: | Ishihara, Nagisa Browse this author | | Kurosawa, Hiroyuki Browse this author | | Takemoto, Ryo Browse this author | | Jahan, Nahid A. Browse this author | | Nakajima, Hideaki Browse this author | | Kumano, Hidekazu Browse this author →KAKEN DB | | Suemune, Ikuo Browse this author →KAKEN DB |
| Keywords: | metallic cavity | | Q factor | | polarization | | temperature dependence | | whispering gallery mode |
| Issue Date: | 27-Feb-2015 |
| Publisher: | IOP Publishing |
| Journal Title: | Nanotechnology |
| Volume: | 26 |
| Issue: | 8 |
| Start Page: | 85201 |
| Publisher DOI: | 10.1088/0957-4484/26/8/085201 |
| PMID: | 25648417 |
| Abstract: | 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. |
| Rights: | 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. |
| Relation: | http://iopscience.iop.org/0957-4484/26/8/085201 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/60632 |
| 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
|
