Polarization-independent nonreciprocal thermal radiation by cylindrical grating structure

Zou, Hong; Wang, Bo; Wu, Jun

doi:10.1016/j.ijheatmasstransfer.2024.125819

International Journal of Heat and Mass Transfer

2024

DOI: 10.1016/j.ijheatmasstransfer.2024.125819

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Polarization-independent nonreciprocal thermal radiation by cylindrical grating structure

Hong Zou,

Bo Wang,

Jun Wu

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2025

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Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45°

Wang,

Chen

et al. 2025

Nanophotonics

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Grating under auto-collimation configuration with polarization-independent high diffraction efficiency plays an important role in the displacement measurement system, spectral beam combining system and so on. In this paper, we proposed, for the first time, a reflective two-dimensional metal-dielectric grating of which the (−1, −1) order beam is diffracted back along the input light direction, when the incident azimuth angle is 45°. With optimized structure, the (−1, −1) order diffraction efficiencies of transverse electric polarization (TE) and transverse magnetic polarization (TM) are 95.01 % and 95.04 % at incident wavelength of 632 nm, respectively. The structure based on the frustum of a cone performs well in manufacturing tolerance, which provides possibility for practical applications. A grating is fabricated experimentally in this research. The high efficiencies of TE and TM polarization have great application potential in 2D displacement measurement technique and high power laser systems.

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Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45°

Wang,

Chen

et al. 2025

Nanophotonics

View full text Add to dashboard Cite

show abstract

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Polarization-independent nonreciprocal thermal radiation by cylindrical grating structure

Cited by 1 publication

References 39 publications

Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45°

Auto-collimation diffraction of two-dimensional metal–dielectric grating with azimuth angle of 45°

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