Experimental demonstration of coupled nano-Fabry-Perot groove resonators.

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-07-01 DOI:10.1364/OL.561647

Jules Lackner, Baptiste Fix, Nathalie Bardou, Christophe Dupuis, Patrick Bouchon

引用次数: 0

Abstract

Fabry-Perot (FP) resonances are ubiquitous in plasmonic resonators; however, their quality factor is mostly driven by the losses of the material and has a typical value of 10 for noble metals. The coupling of two FP nanocavities (cFP) was theoretically shown by Opt. Lett.42, 5062 (2017)10.1364/OL.42.005062 to enable the control of the quality factor, thanks to a geometrical parameter. Here, we experimentally demonstrate in the infrared range the cFP resonance with a quality factor of 30 in a structure made of metallic grooves with a trapezoidal-shaped profile that is simultaneously easier to fabricate and more complex to model. An analytical one-mode model is derived that undoubtedly attributes the resonance to the coupling of interferences between the two nanocavities. Finally, we also experimentally demonstrate the combination of two cFP either in orthogonal polarizations or for distinct wavelengths.

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耦合纳米-法布里-珀罗槽谐振腔的实验验证。

法布里-珀罗（FP）共振在等离子体谐振器中普遍存在；然而，它们的质量因子主要是由材料的损耗驱动的，贵金属的典型值为10。Opt. letter .42, 5062 (2017)10.1364/OL.42.005062从理论上证明了两个FP纳米空腔（cFP）的耦合，从而可以通过几何参数控制质量因子。在这里，我们通过实验证明，在红外范围内，由梯形轮廓的金属凹槽制成的结构中的cFP共振质量因子为30，同时更容易制造，但更复杂的建模。推导出的解析单模模型无疑地将共振归因于两个纳米腔之间的干涉耦合。最后，我们还通过实验证明了两个cFP在正交偏振或不同波长下的组合。

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 letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.