Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum

Kirill Koshelev; Sergey Kruk; Elizaveta Melik-Gaykazyan; Jae Hyuck Choi; Andrey Bogdanov; Hong Gyu Park; Yuri Kivshar

doi:10.1117/12.2544231

Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum

Kirill Koshelev, Sergey Kruk, Elizaveta Melik-Gaykazyan, Jae Hyuck Choi, Andrey Bogdanov, Hong Gyu Park, Yuri Kivshar

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Recent developments in the physics of Mie-resonant high-index dielectric nanostructures suggested a promising pathway to improve efficiencies of the nonlinear light conversion beyond the limits imposed by plasmonics. Here, we employ the concept of bound states in the continuum to experimentally demonstrate a sharp enhancement of the second-harmonic generation efficiency at localized states formed via destructive interference of two leaky modes. For an AlGaAs subwavelength disk with optimized parameters, pumped with a structured light and placed on an engineered multilayered substrate, we observe the record-high conversion efficiency compared to the previous demonstrations with isolated subwavelength resonators.

Original language	English
Title of host publication	High Contrast Metastructures IX
Editors	Connie J. Chang-Hasnain, Andrei Faraon, Weimin Zhou
Publisher	SPIE
ISBN (Electronic)	9781510633438
DOIs	https://doi.org/10.1117/12.2544231
Publication status	Published - 2020
Event	High Contrast Metastructures IX 2020 - San Francisco, United States Duration: 2020 Feb 3 → 2020 Feb 6

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11290
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	High Contrast Metastructures IX 2020
Country/Territory	United States
City	San Francisco
Period	20/2/3 → 20/2/6

Keywords

Bound states in the continuum
Meta-optics
Nanoantenna
Second-harmonic generation
Structured light
Subwavelength resonator

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2544231

Cite this

Koshelev, K., Kruk, S., Melik-Gaykazyan, E., Choi, J. H., Bogdanov, A., Park, H. G., & Kivshar, Y. (2020). Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum. In C. J. Chang-Hasnain, A. Faraon, & W. Zhou (Eds.), High Contrast Metastructures IX Article 112900C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11290). SPIE. https://doi.org/10.1117/12.2544231

Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum. / Koshelev, Kirill; Kruk, Sergey; Melik-Gaykazyan, Elizaveta et al.
High Contrast Metastructures IX. ed. / Connie J. Chang-Hasnain; Andrei Faraon; Weimin Zhou. SPIE, 2020. 112900C (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11290).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Koshelev, K, Kruk, S, Melik-Gaykazyan, E, Choi, JH, Bogdanov, A, Park, HG & Kivshar, Y 2020, Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum. in CJ Chang-Hasnain, A Faraon & W Zhou (eds), High Contrast Metastructures IX., 112900C, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11290, SPIE, High Contrast Metastructures IX 2020, San Francisco, United States, 20/2/3. https://doi.org/10.1117/12.2544231

Koshelev K, Kruk S, Melik-Gaykazyan E, Choi JH, Bogdanov A, Park HG et al. Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum. In Chang-Hasnain CJ, Faraon A, Zhou W, editors, High Contrast Metastructures IX. SPIE. 2020. 112900C. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2544231

Koshelev, Kirill ; Kruk, Sergey ; Melik-Gaykazyan, Elizaveta et al. / Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum. High Contrast Metastructures IX. editor / Connie J. Chang-Hasnain ; Andrei Faraon ; Weimin Zhou. SPIE, 2020. (Proceedings of SPIE - The International Society for Optical Engineering).

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abstract = "Recent developments in the physics of Mie-resonant high-index dielectric nanostructures suggested a promising pathway to improve efficiencies of the nonlinear light conversion beyond the limits imposed by plasmonics. Here, we employ the concept of bound states in the continuum to experimentally demonstrate a sharp enhancement of the second-harmonic generation efficiency at localized states formed via destructive interference of two leaky modes. For an AlGaAs subwavelength disk with optimized parameters, pumped with a structured light and placed on an engineered multilayered substrate, we observe the record-high conversion efficiency compared to the previous demonstrations with isolated subwavelength resonators.",

keywords = "Bound states in the continuum, Meta-optics, Nanoantenna, Second-harmonic generation, Structured light, Subwavelength resonator",

author = "Kirill Koshelev and Sergey Kruk and Elizaveta Melik-Gaykazyan and Choi, {Jae Hyuck} and Andrey Bogdanov and Park, {Hong Gyu} and Yuri Kivshar",

note = "Funding Information: The authors acknowledge a financial support from the Australian Research Council (ARC), the Russian Foundation for Basic Research (18-32-20205), and the National Research Foundation of Korea (NRF) under grant no. 2018R1A3A3000666 funded by the Korean Government (MSIT). K.K. and A.B. acknowledge support from the Foundation for the Advancement of Theoretical Physics and Mathematics “BASIS“. Publisher Copyright: {\textcopyright} 2020 SPIE.; High Contrast Metastructures IX 2020 ; Conference date: 03-02-2020 Through 06-02-2020",

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doi = "10.1117/12.2544231",

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AU - Choi, Jae Hyuck

AU - Bogdanov, Andrey

AU - Park, Hong Gyu

AU - Kivshar, Yuri

N1 - Funding Information: The authors acknowledge a financial support from the Australian Research Council (ARC), the Russian Foundation for Basic Research (18-32-20205), and the National Research Foundation of Korea (NRF) under grant no. 2018R1A3A3000666 funded by the Korean Government (MSIT). K.K. and A.B. acknowledge support from the Foundation for the Advancement of Theoretical Physics and Mathematics “BASIS“. Publisher Copyright: © 2020 SPIE.

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N2 - Recent developments in the physics of Mie-resonant high-index dielectric nanostructures suggested a promising pathway to improve efficiencies of the nonlinear light conversion beyond the limits imposed by plasmonics. Here, we employ the concept of bound states in the continuum to experimentally demonstrate a sharp enhancement of the second-harmonic generation efficiency at localized states formed via destructive interference of two leaky modes. For an AlGaAs subwavelength disk with optimized parameters, pumped with a structured light and placed on an engineered multilayered substrate, we observe the record-high conversion efficiency compared to the previous demonstrations with isolated subwavelength resonators.

AB - Recent developments in the physics of Mie-resonant high-index dielectric nanostructures suggested a promising pathway to improve efficiencies of the nonlinear light conversion beyond the limits imposed by plasmonics. Here, we employ the concept of bound states in the continuum to experimentally demonstrate a sharp enhancement of the second-harmonic generation efficiency at localized states formed via destructive interference of two leaky modes. For an AlGaAs subwavelength disk with optimized parameters, pumped with a structured light and placed on an engineered multilayered substrate, we observe the record-high conversion efficiency compared to the previous demonstrations with isolated subwavelength resonators.

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Observation of highly efficient second-harmonic generation at the nanoscale driven by bound states in the continuum

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