Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/138760
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Type: | Journal article |
Title: | High-harmonic generation from a subwavelength dielectric resonator |
Author: | Zalogina, A. Carletti, L. Tripathi, A. Lee, H.C. Shadrivov, I. Park, H.G. Kivshar, Y. Kruk, S. |
Citation: | Science Advances, 2023; 9(17):1-7 |
Publisher: | American Association for the Advancement of Science |
Issue Date: | 2023 |
ISSN: | 2375-2548 2375-2548 |
Statement of Responsibility: | Anastasiia Zalogina, Luca Carletti, Anton Rudenko, Jerome V. Moloney, Aditya Tripathi, Hoo-Cheol Lee, Ilya Shadrivov, Hong-Gyu Park, Yuri Kivshar, Sergey S. Kruk |
Abstract: | Higher-order optical harmonics entered the realm of nanostructured solids being observed recently in optical gratings and metasurfaces with a subwavelength thickness. Structuring materials at the subwavelength scale allows us toresonantly enhance the efficiency of nonlinear processes and reduce the size of high-harmonic sources. We report the observation of up to a seventh harmonic generated from a single subwavelength resonator made of AlGaAs material. This process is enabled by careful engineering of the resonator geometry for supporting an optical mode associated with a quasi-bound state in the continuum in the mid-infrared spectral range at around λ = 3.7 μm pump wavelength. The resonator volume measures ~0.1 λ3. The resonant modes are excited with an azimuthally polarized tightly focused beam. We evaluate the contributions of perturbative and nonperturbative nonlinearities to the harmonic generation process. Our work proves the possibility to miniaturize solid-state sources of high harmonics to the subwavelength volumes. |
Description: | Published 26 April 2023 |
Rights: | Copyright © 2023 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). |
DOI: | 10.1126/sciadv.adg2655 |
Grant ID: | http://purl.org/au-research/grants/arc/DE210100679 http://purl.org/au-research/grants/arc/DP210101292 |
Published version: | http://dx.doi.org/10.1126/sciadv.adg2655 |
Appears in Collections: | Physics publications |
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hdl_138760.pdf | Published version | 827.91 kB | Adobe PDF | View/Open |
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