Direct Measurement of Electrically Modulated Far-Field Thermal Infrared Emission and its Dynamics

Liu, Xiu; Salihoglu, Hakan; Luo, Xiao; Wang, Zexiao; Yun, Hyeong Seok; Jing, Lin; Yu, Bowen; Shen, Sheng

doi:10.1103/physrevapplied.19.034040

Phys. Rev. Applied

2023

DOI: 10.1103/physrevapplied.19.034040

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Direct Measurement of Electrically Modulated Far-Field Thermal Infrared Emission and its Dynamics

Xiu Liu

Hakan Salihoglu

Xiao Luo

et al.

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Cited by 3 publications

References 45 publications

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Hybrid Plasmonic‐GeTe Active Metasurfaces with High Tunability

Kim,

Liu,

Wang

et al. 2024

Advanced Photonics Research

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A novel hybrid plasmonic‐germanium telluride (GeTe) metasurface design, which demonstrates single‐peak on/off tunability across a spectral range of 2.5–7.5 μm is developed. Unlike previous metasurface designs utilizing GeTe layers as spacers, this study integrates GeTe as part of the meta‐atoms with gold (Au), significantly reducing the amount of GeTe required while achieving substantial on/off contrast. By varying the sizes of the meta‐atoms, different resonant wavelengths are achieved. This work represents a significant advancement in chalcogenide‐based active metasurfaces, providing precise and dynamic control over thermal emission properties.

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Hybrid Plasmonic‐GeTe Active Metasurfaces with High Tunability

Kim,

Liu,

Wang

et al. 2024

Advanced Photonics Research

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Lock-in amplifiers as a platform for weak signal measurements: Development and applications

Zhang,

Jeong,

Kang

2024

Current Applied Physics

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Tailoring full-Stokes thermal emission from twisted-gratings structures

Yang,

Cai,

Zhang

2023

Nanophotonics

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Polarized thermal emission finds extensive applications in remote sensing, landmine detection, and target detection. In applications such as ellipsometry and biomedical analysis, the generation of emission with controllable polarization is preferred. It is desired to manipulate the polarization state over the full Stokes parameters. While numerous studies have demonstrated either linear or circular polarization control using metamaterials, full-Stokes thermal emission has not been explored. Here, a microstructure based on two layers of silicon carbide gratings is proposed to tailor the polarization state of thermal emission, covering the full-Stokes parameter range. The bilayer twisted-gratings structure breaks mirror symmetry. Wave interference at the interfaces and diffraction by the gratings enhance the emission dichroism, resulting in almost completely polarized emission. By adjusting the twist angle between the gratings, the polarization state can be continuously tuned from linear to circular, nearly covering the entire surface of Poincaré sphere. This study provides a design for tailoring full-Stokes emission with notable advantages over other plasmonic metasurfaces.

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Direct Measurement of Electrically Modulated Far-Field Thermal Infrared Emission and its Dynamics

Cited by 3 publications

References 45 publications

Hybrid Plasmonic‐GeTe Active Metasurfaces with High Tunability

Hybrid Plasmonic‐GeTe Active Metasurfaces with High Tunability

Lock-in amplifiers as a platform for weak signal measurements: Development and applications

Tailoring full-Stokes thermal emission from twisted-gratings structures

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