基于连续介质准束缚态的双频光束Goos-Hänchen位移动态控制研究

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-04-07 DOI:10.1016/j.optcom.2025.131841

Xiao Yang , Weici Liu , Zhongchao Wei , Hongyun Meng , Hongzhan Liu , Jianping Guo , Jianyun Chen , Feiyue Zeng , Shuai Zhang , Peijian Huang , Faqiang Wang

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引用次数: 0

摘要

通过数值模拟，我们通过打破光栅宽度的对称性，在含石墨烯的复合周期光栅波导结构中获得了两种不同的通信波段连续介质的准束缚态。基于Q-BIC机制，可以在双波段实现超过3个波长量级的巨大增强Goos-Hänchen （GH）位移。由于石墨烯的电光特性，可以通过改变其费米能级来实现动态可调位移效应。最后，我们设计了一种可以实现GH大位移的光栅结构，并在广角范围内展示了其出色的角度传感性能（灵敏度高达108 μm/deg），在现实中的信号放大和角度传感应用中具有很大的潜力。

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Research on dynamic control of Goos-Hänchen shifts of dual-band beams based on quasi-bound states in the continuum

Through numerical simulation, we obtain two different quasi-bound states in the continuum (Q-BICs) at telecommunication band in a graphene-containing compound periodic grating waveguide structure by breaking the symmetry of grating width. Based on the Q-BIC mechanism, giant enhanced Goos-Hänchen (GH) shift with more than three orders of wavelength can be realized in dual bands. Due to the electro-optical properties of graphene, the dynamic adjustable shift effect is realized by changing its Fermi level. Finally, we design a grating structure that can realize giant GH shift, and demonstrate its excellent angular sensing performance (the sensitivity up to 10⁸ μm/deg) in wide angle range, which has great potential for signal amplification and angle sensing applications in reality.

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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.