Electromagnetic field confinement by bound states in the continuum

Stan Ter Huurne; Diego R. Abujetas; Niels Van Hoof; José A Sánchez-Gil; Jaime Gomez Rivas

doi:10.1109/IRMMW-THz50927.2022.9895585

Electromagnetic field confinement by bound states in the continuum

Stan Ter Huurne, Diego R. Abujetas, Niels Van Hoof, José A Sánchez-Gil, Jaime Gomez Rivas

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Confining electromagnetic fields as tightly as possible has driven research in optics and photonics. Conventionally, extreme sub-wavelength confinement is possible at the cost of absorption losses in resonant structures. Here, we experimentally show that it is possible to get an extreme confinement of the electromagnetic field in a resonant system without losses. We exploit symmetry protected bound states in the continuum which fully suppress any radiative losses. Using our unique local excitation and detection terahertz microscope we can measure the confinement of the electric field at the surface of our array, revealing an amplitude decay of λ/38 at 0.39 THz.

Original language	English
Title of host publication	2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)
Publisher	Institute of Electrical and Electronics Engineers
Number of pages	1
ISBN (Electronic)	9781728194271
DOIs	https://doi.org/10.1109/IRMMW-THz50927.2022.9895585
Publication status	Published - 26 Sept 2022
Event	47th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2022 - Technical University Delft, Delft, Netherlands Duration: 28 Aug 2022 → 2 Sept 2022 Conference number: 47 https://www.irmmw-thz2022.tudelft.nl/

Conference

Conference	47th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2022
Abbreviated title	IRMMW-THz
Country/Territory	Netherlands
City	Delft
Period	28/08/22 → 2/09/22
Internet address	https://www.irmmw-thz2022.tudelft.nl/

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Ter Huurne, S., Abujetas, D. R., Van Hoof, N., Sánchez-Gil, J. A., & Rivas, J. G. (2022). Electromagnetic field confinement by bound states in the continuum. In 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) Article 9895585 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IRMMW-THz50927.2022.9895585

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abstract = "Confining electromagnetic fields as tightly as possible has driven research in optics and photonics. Conventionally, extreme sub-wavelength confinement is possible at the cost of absorption losses in resonant structures. Here, we experimentally show that it is possible to get an extreme confinement of the electromagnetic field in a resonant system without losses. We exploit symmetry protected bound states in the continuum which fully suppress any radiative losses. Using our unique local excitation and detection terahertz microscope we can measure the confinement of the electric field at the surface of our array, revealing an amplitude decay of λ/38 at 0.39 THz.",

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Ter Huurne, S, Abujetas, DR, Van Hoof, N, Sánchez-Gil, JA & Rivas, JG 2022, Electromagnetic field confinement by bound states in the continuum. in 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)., 9895585, Institute of Electrical and Electronics Engineers, 47th International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2022, Delft, Netherlands, 28/08/22. https://doi.org/10.1109/IRMMW-THz50927.2022.9895585

Electromagnetic field confinement by bound states in the continuum. / Ter Huurne, Stan; Abujetas, Diego R.; Van Hoof, Niels et al.
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz). Institute of Electrical and Electronics Engineers, 2022. 9895585.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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AU - Sánchez-Gil, José A

AU - Rivas, Jaime Gomez

N1 - Conference code: 47

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AB - Confining electromagnetic fields as tightly as possible has driven research in optics and photonics. Conventionally, extreme sub-wavelength confinement is possible at the cost of absorption losses in resonant structures. Here, we experimentally show that it is possible to get an extreme confinement of the electromagnetic field in a resonant system without losses. We exploit symmetry protected bound states in the continuum which fully suppress any radiative losses. Using our unique local excitation and detection terahertz microscope we can measure the confinement of the electric field at the surface of our array, revealing an amplitude decay of λ/38 at 0.39 THz.

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Y2 - 28 August 2022 through 2 September 2022

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Electromagnetic field confinement by bound states in the continuum

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