High-sensitivity and multiple fingerprint detection at an exception point in electromagnetic induced transparent metasurfaces

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-03-05 DOI:10.1016/j.optcom.2025.131699

Pingsheng Zhang, Menghan Xiong, Xingyan Zhao, Yang Qiu, Shaonan Zheng, Yuan Dong, Qize Zhong, Ting Hu

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引用次数: 0

Abstract

Electromagnetic induced transparent (EIT) metasurfaces have garnered significant interest in the terahertz (THz) fingerprint sensing field, owing to their capability to enhance light-matter interactions. However, previous EIT metasurfaces typically exhibit unsatisfactory sensitivity and a narrower detection bandwidth, limiting their capability in broadband fingerprint detection. Here, an EIT metasurface characterized by exceptional point and tunable properties is presented. Based on the synchronous gate voltage tuning, this EIT metasurface demonstrates tunability in the range of 2.6–4.1 THz, which facilitates the acquisition of multiple fingerprint from analytes. And through theoretical calculations, the exceptional point was accurately identified, enabling the EIT metasurface to achieve a sensitivity of 1.22 THz/RIU. Most importantly, the proposed EIT metasurface identifies multiple THz fingerprints of melamine, showcasing a excellent capability for fingerprint sensing. The proposed EIT metasurface integrates high sensitivity and tunability, showcasing significant potential for applications in broadband THz fingerprint sensing.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.