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3D打印的近红外高数字光圈无色金属传感器

Heming Wei¹, Wenchen Hu¹, Jingtian Hu²

¹Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai 200444, China.

|June 12, 2025

概括

研究人员使用3D打印开发了一种紧的无色金属. 这种先进的金属对宽波长提供了卓越的聚焦能力,对航空航天应用有很大的希望.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

传统的光学弗雷内尔微镜头面临尺寸,成像质量和无色聚焦效率的局限性,特别是在高数值光圈 (NA) 时.
与传统光学相比,金属透镜利用子波长结构进行相位调节,在小型化方面具有优势,并提高了对焦性能.

研究的目的:

为了逆向设计和制造高NA,宽带无色金属具有提高聚焦效率和降低体积.
探索3D打印技术的潜力,为航空航天领域等专业应用创造先进的超级设备.

主要方法:

逆向设计原则被用于概念化金属结构.
通过双光子聚合直接激光写作被用于制造.
在广泛的波长范围内对焦效率和分辨率的描述.

主要成果:

成功制造了一种带着焦距为19微米,厚度为3.6微米,NA为0.8的无色金属.
在工作波长下,金属的平均聚焦效率为53.6%,平均半最大宽度为1.27μm.
在1510nm-1610nm带宽中,测量的平均聚焦效率为50.4%.

结论:

制造的金属镜片克服了传统微镜片的局限性,在一个紧的形状因素中提供了卓越的无色聚焦性能.
该研究强调了将3D打印和反向设计结合起来,在开发功能性元器件方面,对于航空航天等苛刻领域的巨大潜力.

关键词:

超材料是指一种超材料.光学材料光学材料是指光学材料.光学是什么?光学是什么?光学是什么?光子学是一个光子学.

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