A5061632646- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Photonic and Optical Devices
- Thermal Radiation and Cooling Technologies
- Random lasers and scattering media
- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Optical Polarization and Ellipsometry
- Advanced Photonic Communication Systems
- Neural Networks and Reservoir Computing
- Near-Field Optical Microscopy
Changchun Institute of Optics, Fine Mechanics and Physics
2019-2025
Chinese Academy of Sciences
2019-2025
University of Chinese Academy of Sciences
2020-2024
Two types of ultra-broadband long wavelength infrared (LWIR) absorbers with small period and super thin thickness are designed. The absorption high absorptivity large bandwidth is achieved through combined propagating localized surfaced plasmon resonances. We first design a three-layer absorber Ti-Ge-Ti configuration, the structure only 1.4 µm (nearly 1/8 center wavelength), its dielectric 0.5 (1/22 average 87.9% under normal incident from 8µm to 14µm. Furthermore, four-layer Ti-Ge-Si3N4-Ti...
We design and numerically analyze a Fano resonance device based on periodical all-dielectric "lucky knot" shaped nanostructure in the mid-infrared region with high sensitivity, which is insensitive to polarization incident angle. The proposed sensitive change of refractive index substance be tested. established correspondence between peak position reflection spectrum. And then we propose an optical sensor sensitivity 986 nm/RIU, maximum figure merit 32.7, much higher compared metallic...
Abstract As an inherent and important property of light, polarization could provide information beyond light intensity spectrum. However, traditional detectors require bulky optics accurate heterogeneous integration, which limits their miniaturization. Conversely, recently developed miniaturized near-field photodetectors can efficiently achieve detection with the advantages being filterless, cost-effective, portable. These attributes play a significant role in various fields, including...
<title>Abstract</title> All-optical image processing based on metasurfaces is a swiftly advancing field of technology, due to its high speed, large integrability and inherently low energy requirements. So far, the proposed devices have been focusing canonical operations, such as differentiations perform edge detection across all objects in complex scene. Yet, undesired background noise clutter can hinder requiring target selection with digital post-processing which limits overall accuracy,...
Abstract A metamaterial absorber is proposed that functions in the medium‐ (3–5 µm) and long‐wavelength (8–12 infrared (medium‐wavelength infrared, MWIR, LWIR, respectively) regions. The design, which consists of periodic cells, can be tuned to achieve single‐band or dual‐band light absorption by changing periodicity structure. Each cell forming a bottom metal plate (Al), top disk (Ti), an intermediate dielectric medium (Si ZnS) (Ti) embedded. For period 0.85 µm, achieves broadband LWIR...
Simultaneous capture of various light information, including polarization and edge information the objects, has consistently been a fundamental concern within field target recognition. However, these tasks are typically accompanied by bulky optical components active illumination methods, which significantly restricts their use in compact lightweight applications. Here, we demonstrate metalens-assisted imaging system that can simultaneously achieve optoelectronic detection single shot with...
A dual-band metamaterial absorber based on local surface plasmon resonance is designed, which composed of a periodic arrangement stacked nanodisk structures. The structure unit consists two dielectric layers and three metal layers. Based the finite difference time domain method, under condition vertically incident plane light, absorption peaks in mid-wave infrared long-wave (MWIR/LWIR) are obtained, greater than 98%. has good state tolerance characteristics. We can modulate MWIR/LWIR by...