2019 Fiscal Year Annual Research Report
On-chip plasmonic nanolasers for ultrafast optical interconnects
| Project/Area Number |
17H03229
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| Research Institution | The University of Tokyo |
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Principal Investigator |
J・J Delaunay 東京大学, 大学院工学系研究科(工学部), 准教授 (80376516)
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| Co-Investigator(Kenkyū-buntansha) |
松井 裕章 東京大学, 大学院工学系研究科(工学部), 准教授 (80397752)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | plasmonics / laser / subwavelength |
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| Outline of Annual Research Achievements |
The plasmonic lasing mode was obtained using ZnO (wide bandgap semiconductor) as the gain medium and aluminum as the metal layer. The results were reported in Nano Letters (18, 7769-7776, 2018) and presented as an invited talk at the META 2019 conference. Due to the use of a wide bandgap material as the gain medium, the demonstration of the plasmonic lasing mode is in the ultraviolet region.
In order to extend the range of the lasing wavelengths for the proposed structure, different materials for the gain medium were investigated. We particularly focused on perovskite materials and developed a technique to fabricate high quality perovskite structures on a substrate from perovskite quantum dots. Using this technique, a micro ring laser with a well-defined photonic mode was demonstrated as a first step (under preparation). Following this result, different designs for the perovskite-based plasmonic structure have been optimized by simulation and their fabrication is currently on-going.
In a view to integrate photodetectors with the proposed plasmonic light source, plasmonic structures realizing light detection with hot electrons were investigated. Plasmonic-based photodetectors based with spectral selectivity in the near infrared region were reported in Nanoscale, Nano Express, and Applied Physics Letters.
Finally, optical circuits based on a Bloch surface wave platform (Applied Physics Letters) are proposed to connect the developed light sources and detectors. The circuits have low losses and enable the control of the light propagation direction (under preparation).
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| Research Progress Status |
令和元年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和元年度が最終年度であるため、記入しない。
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