Polarization-Insensitive broadband achromatic inverse design method for high numerical aperture metasurfaces

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-06-09 DOI:10.1016/j.optlastec.2025.113273

Tianyu Zhao , Yue Wang , Fengfeng Shu , Xiao lv , Yihui Wu

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引用次数: 0

Abstract

In biomedical imaging, especially in cellular and single-molecule imaging, multi-wavelength imaging and high resolution are critical performance indicators. Traditional high numerical aperture (NA) optical systems can improve resolution, but chromatic aberration correction is complex and affects the practical application of the system. This research proposes an inverse design method based on multi-wavelength metasurfaces, using super-oscillation phase modulation technology to achieve precise control of light fields across different wavelengths while maintaining consistent unit structure. Based on this approach, we designed a metasurface with a numerical aperture (NA) of 0.8, which demonstrates a 3.9 % chromatic aberration tolerance across the 560–740 nm wavelength range, with a focal depth range of 3 to 4 times the wavelength. Building upon this, the structure was further optimized using the adjoint optimization method with the initial structure as a starting point, achieving a full field of view of 20°.Additionally, the structure exhibits polarization-insensitive characteristics. This inverse design method provides a novel solution for chromatic aberration elimination and resolution enhancement in multi-wavelength optical systems, advancing metasurface technology towards practical applications.

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大数值孔径超表面偏振不敏感宽带消色差反设计方法

在生物医学成像中，特别是在细胞和单分子成像中，多波长成像和高分辨率是关键的性能指标。传统的大数值孔径光学系统可以提高分辨率，但色差校正复杂，影响了系统的实际应用。本研究提出了一种基于多波长超表面的反设计方法，利用超振荡相位调制技术，在保持单元结构一致的情况下，实现对不同波长光场的精确控制。基于这种方法，我们设计了一种数值孔径（NA）为0.8的超表面，在560 ~ 740 nm波长范围内具有3.9%的色差容差，焦深范围为波长的3 ~ 4倍。在此基础上，以初始结构为出发点，采用伴随优化方法对结构进行进一步优化，实现了20°的全视场。此外，该结构具有极化不敏感特性。这种逆设计方法为多波长光学系统中色差的消除和分辨率的提高提供了一种新的解决方案，推动了超表面技术走向实际应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems