Direct Imaging of Weak-to-Strong-Coupling Dynamics in Biological Plasmon–Exciton Systems

Zhiyi Yuan, Shih Hsiu Huang, Zhen Qiao, Chaoyang Gong, Yikai Liao, Munho Kim, Muhammad D. Birowosuto, Cuong Dang, Pin Chieh Wu, Yu Cheng Chen

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)


Optical coupling plays a pivotal role in nanophotonic systems, which can be divided into weak, intermediate, and strong-coupling regimes. Monitoring optical coupling strength is, therefore, the key to understanding light–matter interactions. State-of-the-art approaches based on spectral measurements offer the power to quantify and characterize optical coupling strength at a single cavity level. However, it remains challenging to dynamically characterize coupling strength during the transition from strong- to weak-coupling regimes for many systems simultaneously. Here, a far-field imaging technique is reported that can directly monitor optical coupling dynamics in plasmon–exciton systems, allowing multiple nanocavity emissions to be characterized from weak- to strong-coupling regimes. Light-harvesting biomolecules—chlorophyll-a—is employed to study dynamic light–matter interactions in strongly coupled plasmonic nanocavities. Identification of coupling strength is achieved by extracting red, green, and blue (RGB) values from dark-field images and an enhancement factor from fluorescence images. Lastly, the ability to monitor subtle changes of coupling dynamics in bioplasmonic nanocavity is demonstrated. These findings may deepen the understanding in light–matter interactions, paving new avenues toward applications in quantum-based biosensing and imaging.

期刊Laser and Photonics Reviews
出版狀態Published - 2022 8月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 原子與分子物理與光學
  • 凝聚態物理學


深入研究「Direct Imaging of Weak-to-Strong-Coupling Dynamics in Biological Plasmon–Exciton Systems」主題。共同形成了獨特的指紋。