Shun Fujii

Assistant Professor, Faculty of Science and Technology, Keio University *Profile is at the time of the award.

2024Inamori Research GrantsScience & Engineering

Research topics
Nano-scale optical physics in ultrahigh-Q microcavities functionalized by atomically thin two-dimensional materials
Keyword
Summary
Two-dimensional materials are atomically-thin materials with a thickness of only a few atomic layers, attracting significant attention as next-generation nanotechnology materials. However, it is a challenge to apply these materials to practical devices, and breakthrough technologies are expected for achieving its hybrid integration and maximizing the unique physical properties of two-dimensional materials. This research aims to realize new nanophotonic devices through the development of hybrid devices that combine two-dimensional materials with ultrahigh-Q microcavities.

Message

I aim for intriguing and interesting research as dreaming of the future that goes with nanotechnology!

Outline of Research Achievements

In this study, we fabricated a hybrid device, where a transition metal dichalcogenide (TMDC) two-dimensional material is integrated into an ultrahigh-Q optical microresonator. We investigated unexplored physical properties and phenomena emerging from their combination. We demonstrated highly efficient nonlinear optical effects, as well as modulation of photoluminescence emission via photothermal conversion. These findings are expected to provide important design guidelines for next-generation photonic devices based on two-dimensional materials.


S. Fujii, et al. (2024) van der Waals Decoration of Ultra-High‑Q Silica Microcavities for χ(2)–χ(3) Hybrid Nonlinear Photonics Nano Letters 24, 4209 https://doi.org/10.1021/acs.nanolett.4c00273


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