材料科学
电磁屏蔽
光学
光电子学
激光器
微波食品加热
红外线的
等离子体子
表面等离子体子
物理
量子力学
复合材料
作者
Kui Wen,Xianjun Huang,Tao Tian,Wen-Tao Huang,Peiguo Liu
出处
期刊:Optics Express
[The Optical Society]
日期:2024-02-05
卷期号:32 (4): 5956-5956
被引量:3
摘要
Directional energy weapons such as high-power microwaves and high-energy lasers pose a huge threat to optoelectronic detection systems. With that in mind, we designed an infrared optical window that has a nonlinear optical response to high-energy lasers and electromagnetic shielding to microwaves. By constructing a periodic metal circular hole array structure at the subwavelength scale, surface plasmons resonance is excited and its local field enhanced characteristics are utilized to form information transmission compatibility in the infrared band. At the same time, after laser etching off the subwavelength structure, the remaining metal forms a continuous conductive structure, forming an ultra-wideband shielding layer to achieve ultra-high and wide protection in the microwave band. Moreover, a layer of Ge2Sb2Te5 thin film was deposited between the transparent substrate and the metal film. Utilizing its nonlinear optical properties of high-temperature phase transition to reduce damage of directed energy weapons to the photoelectric detection system and equipment. Thus, when the photoelectric detection system or device is damaged or interfered by signals of different frequency bands or energies, the filtering window can achieve multi-mode shielding function.
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