Realizing a point-like cavity and its efficient coupling

Myung Ki Kim; Hongchul Sim; Seung Ju Yoon; Yong Hee Lee

doi:10.1109/ICTON.2015.7193581

Realizing a point-like cavity and its efficient coupling

Myung Ki Kim, Hongchul Sim, Seung Ju Yoon, Yong Hee Lee

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Confining photons in the smallest possible volume has long been the theme of the nanophotonics community. In this study, we suggest two types of point-like cavities: 1) 3D nano-diabolo metallic cavities and 2) plasmonic crystal point-like cavities, which both extremely squeeze photons in a 3D fashion with mode volumes of < 10^-6 λ³ and intensity enhancements of >10⁵. The former confines photons as forming the three-dimensionally tapered sub-5-nm air-gaps at the center of complementary nano-diabolo structures and the latter as tapering the metal-insulator-metal plasmonic crystal cavities along all three dimensions. Especially, the plasmonic crystal point-like cavities could couple to the integrated waveguides with over 90% efficiency by optimally selecting the number of air-holes in the plasmonic crystals. Based on the theoretical study, we fabricated the 3D nano-diabolo metallic cavity with a minimum gap size of 4 nm using the proximal milling technique, and the plasmonic crystal point-like cavity with the integrated waveguide using the electron-beam ion-deposition and focused ion-beam milling techniques. We strongly believe that our proposed point-like cavities could open a new research theme based on 3D nano-metallic structures, providing both extreme photon density and efficient coupling.

Original language	English
Title of host publication	ICTON 2015 - 17th International Conference on Transparent Optical Networks
Editors	Marek Jaworski, Marian Marciniak
Publisher	IEEE Computer Society
ISBN (Electronic)	9781467378802
DOIs	https://doi.org/10.1109/ICTON.2015.7193581
Publication status	Published - 2015 Aug 12
Externally published	Yes
Event	17th International Conference on Transparent Optical Networks, ICTON 2015 - Budapest, Hungary Duration: 2015 Jul 5 → 2015 Jul 9

Publication series

Name	International Conference on Transparent Optical Networks
Volume	2015-August
ISSN (Electronic)	2162-7339

Conference

Conference	17th International Conference on Transparent Optical Networks, ICTON 2015
Country/Territory	Hungary
City	Budapest
Period	15/7/5 → 15/7/9

Keywords

Nano-optics
Nanofabrications
Plasmonic crystals
Plasmonics
Point-like cavities

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

Access to Document

10.1109/ICTON.2015.7193581

Cite this

Kim, M. K., Sim, H., Yoon, S. J., & Lee, Y. H. (2015). Realizing a point-like cavity and its efficient coupling. In M. Jaworski, & M. Marciniak (Eds.), ICTON 2015 - 17th International Conference on Transparent Optical Networks [7193581] (International Conference on Transparent Optical Networks; Vol. 2015-August). IEEE Computer Society. https://doi.org/10.1109/ICTON.2015.7193581

Realizing a point-like cavity and its efficient coupling. / Kim, Myung Ki; Sim, Hongchul; Yoon, Seung Ju et al.
ICTON 2015 - 17th International Conference on Transparent Optical Networks. ed. / Marek Jaworski; Marian Marciniak. IEEE Computer Society, 2015. 7193581 (International Conference on Transparent Optical Networks; Vol. 2015-August).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kim, MK, Sim, H, Yoon, SJ & Lee, YH 2015, Realizing a point-like cavity and its efficient coupling. in M Jaworski & M Marciniak (eds), ICTON 2015 - 17th International Conference on Transparent Optical Networks., 7193581, International Conference on Transparent Optical Networks, vol. 2015-August, IEEE Computer Society, 17th International Conference on Transparent Optical Networks, ICTON 2015, Budapest, Hungary, 15/7/5. https://doi.org/10.1109/ICTON.2015.7193581

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AB - Confining photons in the smallest possible volume has long been the theme of the nanophotonics community. In this study, we suggest two types of point-like cavities: 1) 3D nano-diabolo metallic cavities and 2) plasmonic crystal point-like cavities, which both extremely squeeze photons in a 3D fashion with mode volumes of < 10-6 λ3 and intensity enhancements of >105. The former confines photons as forming the three-dimensionally tapered sub-5-nm air-gaps at the center of complementary nano-diabolo structures and the latter as tapering the metal-insulator-metal plasmonic crystal cavities along all three dimensions. Especially, the plasmonic crystal point-like cavities could couple to the integrated waveguides with over 90% efficiency by optimally selecting the number of air-holes in the plasmonic crystals. Based on the theoretical study, we fabricated the 3D nano-diabolo metallic cavity with a minimum gap size of 4 nm using the proximal milling technique, and the plasmonic crystal point-like cavity with the integrated waveguide using the electron-beam ion-deposition and focused ion-beam milling techniques. We strongly believe that our proposed point-like cavities could open a new research theme based on 3D nano-metallic structures, providing both extreme photon density and efficient coupling.

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Realizing a point-like cavity and its efficient coupling

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Keywords

ASJC Scopus subject areas

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