基于铌酸锂的高效手性非线性超表面

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-03-31 DOI:10.1109/LPT.2025.3556515

Xudong Hu;Rongquan Chen;Wei Wang;Yuqing Song;Xixi Chu;Hanfeng Wei;Jinbiao Liu;Ming Chen

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引用次数: 0

摘要

近年来，人们对非线性超表面进行了大量的研究。铌酸锂的优点是其在近红外波段的透明性和高的非线性系数。本文设计了一种基于铌酸锂手性结构的超表面。当光强为0.0561 GW/cm2时，非线性效率可达3.9%。在相同的非线性条件下，它也可以实现0.79的圆二色性（CD）。利用多极分解分析了谐振原理。这种手性结构增加了结构调整的自由度，实现了对不同圆偏振光的差分响应。本研究具有良好的综合效果，可应用于生物传感、非线性成像、编码、手性光调制等领域。

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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Efficient Chiral Nonlinear Metasurface Based on Lithium Niobate

There have been many researches on nonlinear metasurface in recent years. The advantages of lithium niobate are its transparency in the near infrared range as well as high nonlinear coefficients. In this letter, a metasurface based on the chiral structure of lithium niobate is designed. The nonlinear efficiency can reach 3.9% with optical intensity at 0.0561 GW/cm². It can also achieve a circular dichroism (CD) of 0.79 under the same nonlinear conditions. The resonance principle is analyzed by using multipole decomposition. The chiral structure increases the degree of freedom of structural adjustment and realizes the differential response to different circularly polarized light. The excellent comprehensive effect of our research can make it applicable to biosensing, nonlinear imaging, encoding, and chiral light modulation.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.