Photonic Nanostructure Research Group, NTT Basic Research Laboratories

HISASHI SUMIKURA - web site

HOME｜ BIOGRAPHY｜ RESEARCH｜ PUBLICATION｜

Research

　RESEARCH INTEREST

We focus on understanding of exciton and phonon properties in low-dimensional materials, those are nanowires, layered materials, and impurities and defects in bulk semiconductors using our in-house-built wide-ranged (mid-infrared to visible) photoluminescence micro-spectroscope and ultrasensitive time-resolved photoluminescence measurement system. The fundamental understanding gives us fruitful information for optimal design of photonic nanostructures to control light-matter interaction. To enhance or suppress photon emission from nanomaterials, we fabricate dielectric photonic crystals, nanocavities, and metallic plasmonic nanostructures, which can be key components in next-generation passive and active nanophotonic devices with an ultimate energy efficiency.

Cavity-QED effects on silicon photonic crystal nanocavities
Optically active impurities in photonic nanostructures
Ultralow-power optical switch, optically-accessible quantum devices
Nanofabrication, impurity doping, and ultrasensitive time-resolved micro-PL measurement

　1. DOPANT NANOPHOTONICS
- Optically active impurity centers in photonic nanostructures

Nonlinear optical absorption of beryllium isoelectronic centers

Ref.
"Nonlinear optical absorption of beryllium isoelectronic centers doped in silicon waveguides",
Appl. Phys. Lett. 113, 141101 (2018). [abstract]

Optomechanical control of cavity-enhanced spontaneous emission from copper-related emission centers

Ref.
"All-optical dynamic modulation of spontaneous emission rate in hybrid optomechanical emitter-cavity systems",
Optica 9, 309 (2022). [full text]

Cavity-enhanced spontaneous emission from copper-related emission centers doped in Si PhC nanocavities

Ref.
"Ultrafast spontaneous emission of copper-doped silicon enhanced by an optical nanocavity",
Sci. Rep. 4, 5040 (2014). [full text]

　2. CARBON NANOPHOTONICS
- Photonic nanostructures coupled with carbon nanotube, graphene, and diamond

Resonant Raman scattering by excitonic states in pristine carbon nanotubes

Ref.
"Strong exciton-phonon interaction assisting simultaneous enhancement of photoluminescence and Raman scattering from suspended carbon nanotubes",
Phys. Rev. B 102, 125432 (2020). [abstract]

Diamond photonic nanostructures and emission control

Ref.
"Highly nitrogen-vacancy doped diamond nanostructures fabricated by ion implantation and optimum annealing",
APL Mater. 8, 031113 (2020). [abstract]

Cavity-enhanced Raman scattering of semiconducting single-walled carbon nanotubes

Ref.
"Cavity-enhanced Raman scattering of single-walled carbon nanotubes",
Appl. Phys. Lett. 102, 231110 (2013). [abstract]

　3. MID-INFRARED NANOPHOTONICS
- Nanophotonics in a mid-infrared region

Time-resolved mid-infrared photoluminescence micro-spectroscopy

Ref.
"Time-resolved mid-infrared photoluminescence from highly strained InAs/InGaAs quantum wells",
Appl. Phys. Express 14, 032008 (2021). [abstract]
"Time-resolved mid-infrared photoluminescence from undoped InAs substrates",
Appl. Phys. Lett. 124, 052105 (2024). [abstract]

Mid-infrared lasing of single wurtzite InAs nanowire

Ref.
"Mid-Infrared Lasing of Single Wurtzite InAs Nanowire",
Nano Lett. 19, 8059 (2019). [abstract]

Subwavelength field confinement in a mid-infrared surface phonon polariton cavity

Ref.
"Highly Confined and Switchable Mid-Infrared Surface Phonon Polariton Resonances of Planar Circular Cavities with a Phase Change Material",
Nano Lett. 19, 2549 (2019). [abstract]

Copyright (C) 2023 Hisashi Sumikura, All Rights Reserved.