Nonlinear Optics of Nanostructures and Metasurfaces

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanophotonics Materials and Devices".

Deadline for manuscript submissions: 13 June 2025 | Viewed by 2040

Special Issue Editors


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Guest Editor
Department of Electrical Engineering, National United University, Miaoli 36003, Taiwan
Interests: metasurfaces and their applications; optoelectronics; light-emitting diodes; microelectronics; high electron mobility transistor

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Guest Editor Assistant
Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, Taoyuan City 32546, Taiwan
Interests: metasurfaces and their applications; optoelectronics; microelectronics

Special Issue Information

Dear Colleagues,

Nonlinear optics is a long-growing field that studies the nonlinear effect between the electric field of light and matter. Long before lasers were invented, some nonlinear phenomena had been discovered. Early studies focused on birefringent inorganic solids, which exhibit different refractive indexes among different axes to fulfill the phase-matching condition. Using these crystals to develop nonlinear optics applications suffers from several drawbacks, such as being bulky and heavy. The development of metasurfaces has been primarily driven by their fascinating characteristics, such as being ultra-thin, lightweight, and capable of CMOS semiconductor processes. Metasurfaces are composed of sub-wavelength meta-atoms and allow for the production of structured light or the development of nonlinear optics applications.

This Special Issue offers researchers devoted to the topics of nonlinear optics of nanostructures and metasurfaces the opportunity to publish state-of-the-art findings around the world. We aim to broaden the applications of nanostructures and metasurfaces in the realm of nonlinear optics.

We invite research articles related to, but not limited to, the following topics:

  1. Nonlinear metasurfaces;
  2. Nonlinear nanophotonics;
  3. Quantum nonlinear optics;
  4. Nonlinear chiral metasurfaces;
  5. Nonlinear resonant metasurfaces.

Dr. Vin-Cent Su
Guest Editor

Dr. Meng-Hsin Chen
Guest Editor Assistant

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Keywords

  • quantum nonlinear optics
  • nonlinear metasurfaces
  • nonlinear nanophotonics
  • nonlinear resonant metasurfaces
  • nonlinear meta-optics

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Published Papers (2 papers)

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Research

13 pages, 3200 KiB  
Article
Excitonic-Vibrational Interaction at 2D Material/Organic Molecule Interfaces Studied by Time-Resolved Sum Frequency Generation
by Huiling Chen, Yu Lian, Tao Zhou, Hui Li, Jiashi Li, Xinyi Liu, Yuan Huang and Wei-Tao Liu
Nanomaterials 2024, 14(23), 1892; https://doi.org/10.3390/nano14231892 - 25 Nov 2024
Viewed by 271
Abstract
The hybrid heterostructures formed between two-dimensional (2D) materials and organic molecules have gained great interest for their potential applications in advanced photonic and optoelectronic devices, such as solar cells and biosensors. Characterizing the interfacial structure and dynamic properties at the molecular level is [...] Read more.
The hybrid heterostructures formed between two-dimensional (2D) materials and organic molecules have gained great interest for their potential applications in advanced photonic and optoelectronic devices, such as solar cells and biosensors. Characterizing the interfacial structure and dynamic properties at the molecular level is essential for realizing such applications. Here, we report a time-resolved sum-frequency generation (TR-SFG) approach to investigate the hybrid structure of polymethyl methacrylate (PMMA) molecules and 2D transition metal dichalcogenides (TMDCs). By utilizing both infrared and visible light, TR-SFG can provide surface-specific information about both molecular vibrations and electronic transitions simultaneously. Our setup employed a Bragg grating for generating both a narrowband probe and an ultrafast pump pulse, along with a synchronized beam chopper and Galvo mirror combination for real-time spectral normalization, which can be readily incorporated into standard SFG setups. Applying this technique to the TMDC/PMMA interfaces yielded structural information regarding PMMA side chains and dynamic responses of both PMMA vibrational modes and TMDC excitonic transitions. We further observed a prominent enhancement effect of the PMMA vibrational SF amplitude for about 10 times upon the resonance with TMDC excitonic transition. These findings lay a foundation for further investigation into interactions at the 2D material/organic molecule interfaces. Full article
(This article belongs to the Special Issue Nonlinear Optics of Nanostructures and Metasurfaces)
12 pages, 3384 KiB  
Article
A Mid-Infrared Perfect Metasurface Absorber with Tri-Band Broadband Scalability
by Yongtu Zou, Shaolin Zhou, Jingxi Li, Shanri Chen and Zhijian Chen
Nanomaterials 2024, 14(15), 1316; https://doi.org/10.3390/nano14151316 - 5 Aug 2024
Cited by 1 | Viewed by 1447
Abstract
Metasurfaces have emerged as a unique group of two-dimensional ultra-compact subwavelength devices for perfect wave absorption due to their exceptional capabilities of light modulation. Nonetheless, achieving high absorption, particularly with multi-band broadband scalability for specialized scenarios, remains a challenge. As an example, the [...] Read more.
Metasurfaces have emerged as a unique group of two-dimensional ultra-compact subwavelength devices for perfect wave absorption due to their exceptional capabilities of light modulation. Nonetheless, achieving high absorption, particularly with multi-band broadband scalability for specialized scenarios, remains a challenge. As an example, the presence of atmospheric windows, as dictated by special gas molecules in different infrared regions, highly demands such scalable modulation abilities for multi-band absorption and filtration. Herein, by leveraging the hybrid effect of Fabry–Perot resonance, magnetic dipole resonance and electric dipole resonance, we achieved multi-broadband absorptivity in three prominent infrared atmospheric windows concurrently, with an average absorptivity of 87.6% in the short-wave infrared region (1.4–1.7 μm), 92.7% in the mid-wave infrared region (3.2–5 μm) and 92.4% in the long-wave infrared region (8–13 μm), respectively. The well-confirmed absorption spectra along with its adaptation to varied incident angles and polarization angles of radiations reveal great potential for fields like infrared imaging, photodetection and communication. Full article
(This article belongs to the Special Issue Nonlinear Optics of Nanostructures and Metasurfaces)
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