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 | |
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 |
Bibliographical note
Publisher Copyright:© 2020 SPIE.
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