Strongly coupled plasmon-exciton polaritons for photobleaching suppression

IF 6.5 2区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanophotonics Pub Date : 2024-08-27 DOI:10.1515/nanoph-2024-0259

Justina Anulytė, Vytautas Žičkus, Ernesta Bužavaitė-Vertelienė, Daniele Faccio, Zigmas Balevičius

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引用次数: 0

Abstract

Strong light–matter interactions have received a lot of attention, for example in the pursuit of plasmonic-excitonic structures as coherent light sources with low-power threshold. In this study, we investigate the influence of room temperature strong coupling between surface plasmon polaritons (SPP) and excitons on fluorescence lifetimes and photobleaching effects. Our plasmonic-photonic structure, comprising of thin silver (Ag) and gold (Au) layers with a Rhodamine 6G (R6G) dye layer, shows a clear shift in the plasmon resonance and R6G absorption lines with varying incident angles, indicative of strong coupling, with a measured Rabi splitting of approximately 90 meV. Fluorescence lifetime imaging microscopy (FLIM) was then employed to assess photobleaching, revealing a significant reduction in photobleaching effect for in strongly coupled plasmonic-excitonic structures compared to single Rhodamine R6G layers. Our findings indicate the pivotal role of strong light–matter interactions in reducing photobleaching effects and stabilizing fluorescence intensities, offering promising avenues for developing quantum multiparticle nanophotonic devices with enhanced stability and performance.

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用于抑制光漂白的强耦合质子-激子极化子

强光-物质相互作用已受到广泛关注，例如在追求作为低功率阈值相干光源的等离子-激子结构方面。在这项研究中，我们探讨了表面等离子体极化子（SPP）与激子之间的室温强耦合对荧光寿命和光漂白效应的影响。我们的质子光子结构由带有罗丹明 6G（R6G）染料层的薄银（Ag）层和金（Au）层组成，随着入射角度的变化，质子共振和 R6G 吸收线会发生明显的偏移，这表明存在强耦合，测得的拉比分裂约为 90 meV。然后采用荧光寿命成像显微镜（FLIM）评估光漂白，结果显示，与单层罗丹明 R6G 相比，强耦合的等离子-激子结构的光漂白效应显著降低。我们的研究结果表明，强光-物质相互作用在减少光漂白效应和稳定荧光强度方面起着关键作用，为开发稳定性和性能更强的量子多粒子纳米光子器件提供了广阔的前景。

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

Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

13.50

自引率

6.70%

发文量

358

审稿时长

7 weeks

期刊介绍： Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.