Design and Preparation of Super Broadband Antireflection Coating

Zhengrong, 郑臻荣 Zheng; Peifu, 顾培夫 Gu; Haixing, 陈海星 Chen; Zhanhui, 陶占辉 Tao; Manlin, 艾曼灵 Ai; Meijiao, 张梅骄 Zhang; Jinfa, 唐晋发 Tang

doi:10.3788/aos20092907.2026

Cited by 3 publications

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“…李攀等 [13] 利用有限时域差分方法设计并优化了由SiO 2 组成的双层和三层减反射膜在1550 nm 波长附近实现了减反射效果. 季雪淞等 [14] 设计了微纳阵列复合结构增强1550 nm处的吸收. 应用于狙击光学系统的隐身策略不仅要求实现激光隐身, 同时需要保证可见光光路的正常通行, 确保可见光的透射效果.…”

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Research on realizing high permeability and laser stealth compatibility in visible light band with dielectric/metal/dielectric film system

Nong,

Zhang,

Wei

et al. 2023

Acta Phys. Sin.

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The "cat's eye effect" in the optical window of all kinds of photoelectric equipment is the main basis of a laser active detection system, which poses a great threat to military equipment and combatants. However, under the condition of ensuring high visible transmittance, the sniper stealth scheme for anti-laser active detection remains to be discussed. In this paper, genetic algorithm was used to reverse design the metasurface anti-reflection film. Si<sub>3</sub>N<sub>4</sub> and Ag were composed of three-layer anti-reflection film, and rectangular array of metal micro-nano structures were added on the top layer to form a wavelength selective absorber, so as to achieve the effect of low reflection and high absorption at laser wavelength. By combining the device design with genetic algorithm, the parameter combination that best meets the target performance of the device is obtained. The average transmittance at 380nm~780nm is 88% meanwhile the maximum transmittance peak of 94%. The reflectance at 1550nm of 10%, and the absorption rate of 80% are achieved. In order to better meet the requirements of practical application, we further designed the cross metal array to obtain polarization insensitive characteristics. The metasurface anti-reflective membrane with improved structure can achieve an average visible transmittance of 82% and a reflectance of 5% at 1550nm. The two metasurface anti-reflection film designed in this paper does not require additional devices, and the imaging quality can be guaranteed. At the same time, it can effectively reduce the laser echo energy, so as to achieve the effect of high quality visible light transmittance and laser stealth compatibility.

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Research on realizing high permeability and laser stealth compatibility in visible light band with dielectric/metal/dielectric film system

Nong,

Zhang,

Wei

et al. 2023

Acta Phys. Sin.

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Research on Broadband Antireflection Coat-ings in the Visible and Near-Infrared Spectral Ranges

郑

2024

AMC

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Wavelength-tunable deep-ultraviolet thin-film filter: design and experimental demonstration

Zhu

2021

Appl. Opt.

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A deep-ultraviolet (DUV) narrowband tunable filter with a central wavelength of 225.0 nm is designed, fabricated, and demonstrated experimentally. The simulation results showed a transmittance of about 42.1% at 225.0 nm and a full width at half-maximum (FWHM) of ∼ 1.2 n m . The experimental results for normal incidence light revealed a corresponding central wavelength of 225.0 nm, a transmittance of 27.7%, and a FWHM of 1.9 nm. By changing the incident angle, the central wavelength can be tuned from 225.0 to 224.5 nm. This DUV narrowband tunable filter has been shown to demonstrate good performance and has broad applicability.

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Design and Preparation of Super Broadband Antireflection Coating

Cited by 3 publications

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Research on realizing high permeability and laser stealth compatibility in visible light band with dielectric/metal/dielectric film system

Research on realizing high permeability and laser stealth compatibility in visible light band with dielectric/metal/dielectric film system

Research on Broadband Antireflection Coat-ings in the Visible and Near-Infrared Spectral Ranges

Wavelength-tunable deep-ultraviolet thin-film filter: design and experimental demonstration

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