Hollow cylinder array metamaterial for high efficiency with polarization independence

Huang, Yusen; Wang, Bo; Liang, Guoyu; Xu, Yuqing; Shi, Xuantong; Liu, Ruijun; Huang, Xu; Huang, Yongyuan

doi:10.1016/j.optcom.2024.130307

Optics Communications

2024

DOI: 10.1016/j.optcom.2024.130307

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Hollow cylinder array metamaterial for high efficiency with polarization independence

Yusen Huang,

Bo Wang,

Guoyu Liang

et al.

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Cited by 2 publications

References 31 publications

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Polarization-independent and high-efficiency 2D dielectric transmission grating under Littrow incidence

Qiao,

Xie,

Kang

et al. 2024

Opt. Express

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In this paper, a transmission two-dimensional (2D) all-dielectric grating with cuboid arrays is proposed, which has high diffraction efficiency and good polarization independence under Littrow mounting conditions at an incident wavelength of 780 nm. The optimization results indicate that when the incident wavelength is 780 nm, the diffraction efficiency of the (−1, 0) order of transverse electric (TE) and transverse magnetic (TM) polarizations can reach 98.62% and 98.23%, respectively, with the polarization-dependent loss (PDL) of 0.017 dB. To the best of our knowledge, high-efficiency polarization-independent 2D transmission grating with a simpler and more effective structure is proposed for the first time, which demonstrates significant enhancements in bandwidth and manufacturing tolerances while maintaining high diffraction efficiency. The results suggest that the grating has great potential for applications in high-precision displacement measurements such as grating interferometers.

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Polarization-independent and high-efficiency 2D dielectric transmission grating under Littrow incidence

Qiao,

Xie,

Kang

et al. 2024

Opt. Express

View full text Add to dashboard Cite

show abstract

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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Hollow cylinder array metamaterial for high efficiency with polarization independence

Cited by 2 publications

References 31 publications

Polarization-independent and high-efficiency 2D dielectric transmission grating under Littrow incidence

Polarization-independent and high-efficiency 2D dielectric transmission grating under Littrow incidence

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

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