Extraordinary suppressed transmission of inverse polarizing gratings with tapered slits in deep ultraviolet band

Wu, Fang; Bu, Yang; Tang, Fanchun; Wang, Xiangzhao

doi:10.1016/j.optcom.2022.127923

Optics Communications

2022

DOI: 10.1016/j.optcom.2022.127923

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Extraordinary suppressed transmission of inverse polarizing gratings with tapered slits in deep ultraviolet band

Fang Wu

Yang Bu

Fanchun Tang

et al.

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Cited by 2 publications

References 18 publications

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β‐Ga₂O₃ Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio

Zhao,

Yang,

Wang

et al. 2024

Advanced Materials

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Solar‐blind ultraviolet (UV) detection plays a critical role in imaging and communication due to its low‐noise background, high signal‐to‐noise ratio, and strong anti‐interference capabilities. Detecting the polarization state of UV light can enhance image information and expand the communication dimension. Although polarization detection is explored in visible and infrared light, and applied in fields such as astrophysics and submarine seismic wave detection, solar‐blind UV polarization detection remains largely unreported. This is primarily due to the challenge of creating UV polarizers with high transmittance, high extinction ratio, and strong resistance to UV radiation. In this study, it is discovered that the space symmetry breaking of the β‐Ga2O3’s b–c plane results in a significant optical absorption dichroic ratio. Leveraging β‐Ga2O3’s high solar‐blind UV response, a lensless solar‐blind UV polarization‐sensitive photodetector, circumventing the challenges associated with solar‐blind UV polarizers is designed. This photodetector exhibits an exceptionally high intrinsic polarization ratio under 254 nm linearly polarized light, approximately two orders of magnitude higher than other reported nanomaterial‐based polarization‐sensitive photodetectors. Additionally, it demonstrates significant advantages in solar‐blind UV imaging and light communication. This work introduces a novel strategy for solar‐blind ultraviolet polarization detection and offers a promising approach for solar‐blind light communication.

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β‐Ga₂O₃ Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio

Zhao,

Yang,

Wang

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

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Tunable extraordinary optical transmission spectrum properties of long-wavelength infrared metamaterials

Sun,

Cai,

Ren

et al. 2023

Appl. Opt.

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Metamaterial filters represent an essential method for researching the miniaturization of infrared spectral detectors. To realize an 8–2 µm long-wave infrared tunable transmission spectral structure, an extraordinary optical transmission metamaterial model was designed based on the grating diffraction effect and surface plasmon polariton resonance theory. The model consisted of an Al grating array in the upper layer and a Ge substrate in the lower layer. We numerically simulated the effects of different structural parameters on the transmission spectra, such as grating height (h), grating width (w), grating distance (d), grating constant (p), and grating length (S1), by utilizing the finite-difference time-domain method. Finally, we obtained the maximum transmittance of 81.52% in the 8–12 µm band range, with the corresponding structural parameters set to h=50nm, w=300nm, d=300nm, and S1=48µm, respectively. After Lorentz fitting, a full width at half maximum of 0.94±0.01µm was achieved. In addition, the Ge substrate influence was taken into account for analyzing the model’s extraordinary optical transmission performance. In particular, we first realized the continuous tuning performance at the transmission center wavelength (8–12 µm) of long-wave infrared within the substrate tuning thickness (D) range of 1.9–2.9 µm. The structure designed in this paper features tunability, broad spectral bandwidth, and miniaturization, which will provide a reference for the development of miniaturized long-wave infrared spectral filter devices.

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Extraordinary suppressed transmission of inverse polarizing gratings with tapered slits in deep ultraviolet band

Cited by 2 publications

References 18 publications

β‐Ga₂O₃ Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio

β‐Ga₂O₃ Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio

Tunable extraordinary optical transmission spectrum properties of long-wavelength infrared metamaterials

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Extraordinary suppressed transmission of inverse polarizing gratings with tapered slits in deep ultraviolet band

Cited by 2 publications

References 18 publications

β‐Ga2O3 Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio

β‐Ga2O3 Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio

Tunable extraordinary optical transmission spectrum properties of long-wavelength infrared metamaterials

Contact Info

Product

Resources

About

β‐Ga₂O₃ Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio

β‐Ga₂O₃ Nanoribbon with Ultra‐High Solar‐Blind Ultraviolet Polarization Ratio