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5 October 2023 Atomic-scale optical spectroscopy at surfaces
Takashi Kumagai
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Proceedings Volume PC12654, Enhanced Spectroscopies and Nanoimaging 2023; PC126540E (2023) https://doi.org/10.1117/12.2676780
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States
Abstract
Optical spectroscopy is a powerful tool for chemical analysis, providing a wealth of information on structure, dynamics, and physical properties of matter. However, the diffraction limit of light hampers to directly resolve nanoscale structures. This physical limitation can be overcome by near-field optics. In particular, localized surface plasmon resonance of metal nanostructures gives rise to strong confinement and enhancement of electromagnetic fields, enabling ultrasensitive optical spectroscopy. I will discuss our recent development on atomic-scale optical spectroscopy at surfaces using a combination of low-temperature scanning tunneling microscopy and quantum plasmonics.
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Takashi Kumagai "Atomic-scale optical spectroscopy at surfaces", Proc. SPIE PC12654, Enhanced Spectroscopies and Nanoimaging 2023, PC126540E (5 October 2023); https://doi.org/10.1117/12.2676780
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KEYWORDS
Optical spectroscopy
Optical surfaces
Raman scattering
Quantum confinement
Quantum plasmonics
Scanning tunneling microscopy
Quantum regime
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