Please use this identifier to cite or link to this item:
https://doi.org/10.1364/OE.413698
DC Field | Value | |
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dc.title | Geometric control over surface plasmon polariton out-coupling pathways in metal-insulator-metal tunnel junctions | |
dc.contributor.author | Andreea Radulescu | |
dc.contributor.author | Ksenia S. Makarenko | |
dc.contributor.author | Thanh Xuan Hoang | |
dc.contributor.author | Vijith Kalathingal | |
dc.contributor.author | Thorin J. Duffin | |
dc.contributor.author | Hong-Son Chu | |
dc.contributor.author | Christian A. Nijhuis | |
dc.date.accessioned | 2021-02-05T05:47:37Z | |
dc.date.available | 2021-02-05T05:47:37Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Andreea Radulescu, Ksenia S. Makarenko, Thanh Xuan Hoang, Vijith Kalathingal, Thorin J. Duffin, Hong-Son Chu, Christian A. Nijhuis (2021). Geometric control over surface plasmon polariton out-coupling pathways in metal-insulator-metal tunnel junctions. Optics Express. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.413698 | |
dc.identifier.issn | 10944087 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/186220 | |
dc.description.abstract | Metal-insulator-metal tunnel junctions (MIM-TJs) can electrically excite surface plasmon polaritons (SPPs) well below the diffraction limit. When inelastically tunneling electrons traverse the tunnel barrier under applied external voltage, a highly-confined cavity mode (MIM-SPP) is excited, which further out-couples from the MIM-TJ to photons and single-interface SPPs via multiple pathways. In this work we control the out-coupling pathways of the MIM-SPP mode by engineering the geometry of the MIM-TJ. We fabricated MIM-TJs with tunneling directions oriented vertical or lateral with respect to the directly integrated plasmonic strip waveguides. With control over the tunneling direction, preferential out-coupling of the MIM-SPP mode to SPPs or photons is achieved. Based on the wavevector distribution of the single-interface SPPs or photons in the far-field emission intensity obtained from back focal plane (BFP) imaging, we estimate the out-coupling efficiency of the MIMSPP mode to multiple out-coupling pathways. We show that in the vertical-MIM-TJs the MIM-SPP mode preferentially out-couples to single-interface SPPs along the strip waveguides while in the lateral-MIM-TJs photon out-coupling to the far-field is more efficient. | |
dc.publisher | OSA Publishing | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.type | Article | |
dc.contributor.department | BIOMEDICAL ENGINEERING | |
dc.contributor.department | CENTRE FOR ADVANCED 2D MATERIALS | |
dc.contributor.department | DEPT OF CHEMISTRY | |
dc.description.doi | 10.1364/OE.413698 | |
dc.description.sourcetitle | Optics Express | |
dc.published.state | Published | |
Appears in Collections: | Staff Publications Elements |
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AR_OE_manuscript.pdf | 3.73 MB | Adobe PDF | OPEN | Published | View/Download |
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