Plasmon nanofocusing for nano-sensing and nano-optical switching

Prabhat Verma; Takayuki Umakoshi; Hiroshi Arata

doi:10.1117/12.3028046

3 October 2024 Plasmon nanofocusing for nano-sensing and nano-optical switching

Prabhat Verma, Takayuki Umakoshi, Hiroshi Arata

Author Affiliations +

Proceedings Volume PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII; PC131110W (2024) https://doi.org/10.1117/12.3028046
Event: Nanoscience + Engineering, 2024, San Diego, California, United States

Abstract

Controlling the physical and electronic properties of materials through optics holds significant appeal for both foundational scientific exploration and the advancement of optoelectronic technologies. A natural progression involves scaling down devices to the nanoscale, necessitating a reduction in the volume of optical interactions to the nanoscale. Optical antennas, though capable of confining light, fall short due to the requirement of illuminating them with a diffraction-limited focal spot, resulting in unintentional illumination of the sample over a larger volume. In contrast, plasmon nanofocusing physically separates the illumination and the nano-light generation sites, enabling background-free and truly confined nano-light. Furthermore, being a non-resonant phenomenon, plasmon nanofocusing is wavelength-independent, allowing for the generation of nano-light across a broad spectrum of wavelengths or even a white nano-light, suitable for nanoscale multi-sensing and optical switching applications. This talk will cover the generation of background-free, wavelength-independent nano-light and its potential applications in nanoscale sensing and optical switching.

Conference Presentation

Citation Download Citation

Prabhat Verma, Takayuki Umakoshi, and Hiroshi Arata "Plasmon nanofocusing for nano-sensing and nano-optical switching", Proc. SPIE PC13111, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XXII, PC131110W (3 October 2024); https://doi.org/10.1117/12.3028046

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KEYWORDS

Optical switching

Plasmons

Light sources and illumination

Electrical properties

Optical antennas

Optical sensing

Optoelectronics

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