用于高质量因子自旋复用成像的非局部惠更斯元透镜。

IF 19.4 1区 物理与天体物理 Q1 Physics and Astronomy
Jin Yao, Yubin Fan, Yunhui Gao, Rong Lin, Zhihui Wang, Mu Ku Chen, Shumin Xiao, Din Ping Tsai
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引用次数: 0

摘要

结合亮场和边缘增强成像为提取物体复杂形态信息提供了有效途径,尤其有利于生物成像。多路元透镜为实现这一功能提供了很有希望的候选者。然而,目前的多路复用元透镜缺乏光谱调制,不同波长之间的串扰影响了成像质量,特别是对于需要精确波长特异性的生物样品。在这里,我们实验证明了非局部惠更斯元透镜用于高质量因子自旋复用成像。连续介质中的准束缚态(q- bic)被激发以提供高质量因子90和入射角依赖。广义Kerker条件由q-BIC和平面Mie共振之间的类法诺相互作用驱动,打破了辐射对称性,导致偏振转换光的透射峰具有几何相位,而未转换光表现出没有几何相位的透射倾角。提高了65%的极化转换效率,同时实现了最小的未转换值,超过了传统薄非局部超表面的理论极限。利用这些效应,输出偏振转换状态显示出有效的波长选择性聚焦相位轮廓。未转换的对应物作为基于入射角色散的有效空间频率滤波器,通过高频边缘细节。在两种输出自旋状态下实现了光场成像和边缘检测。这项工作为非局部超表面提供了一个通用的框架,促进了生物医学成像和传感应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Nonlocal Huygens' meta-lens for high-quality-factor spin-multiplexing imaging.

Nonlocal Huygens' meta-lens for high-quality-factor spin-multiplexing imaging.

Combining bright-field and edge-enhanced imaging affords an effective avenue for extracting complex morphological information from objects, which is particularly beneficial for biological imaging. Multiplexing meta-lenses present promising candidates for achieving this functionality. However, current multiplexing meta-lenses lack spectral modulation, and crosstalk between different wavelengths hampers the imaging quality, especially for biological samples requiring precise wavelength specificity. Here, we experimentally demonstrate the nonlocal Huygens' meta-lens for high-quality-factor spin-multiplexing imaging. Quasi-bound states in the continuum (q-BICs) are excited to provide a high quality factor of 90 and incident-angle dependence. The generalized Kerker condition, driven by Fano-like interactions between q-BIC and in-plane Mie resonances, breaks the radiation symmetry, resulting in a transmission peak with a geometric phase for polarization-converted light, while unconverted light exhibits a transmission dip without a geometric phase. Enhanced polarization conversion efficiency of 65% is achieved, accompanied by a minimal unconverted value, surpassing the theoretical limit of traditional thin nonlocal metasurfaces. Leveraging these effects, the output polarization-converted state exhibits an efficient wavelength-selective focusing phase profile. The unconverted counterpart serves as an effective spatial frequency filter based on incident-angular dispersion, passing high-frequency edge details. Bright-field imaging and edge detection are thus presented under two output spin states. This work provides a versatile framework for nonlocal metasurfaces, boosting biomedical imaging and sensing applications.

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来源期刊
CiteScore
27.00
自引率
2.60%
发文量
331
审稿时长
20 weeks
期刊介绍: Light: Science & Applications is an open-access, fully peer-reviewed publication.It publishes high-quality optics and photonics research globally, covering fundamental research and important issues in engineering and applied sciences related to optics and photonics.
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