Strong coupling between quasi-bound states in the continuum and molecular vibrations in the mid-infrared.

ABSTRACT: Strong light-matter coupling is of much interest for both fundamental research and technological applications. The recently studied bound state in the continuum (BIC) phenomenon in photonics with controlled radiation loss rate significantly facilitates the realization of the strong coupling effect. In this work, we report the experimental observation of room temperature strong coupling between quasi-BIC resonances supported by a zigzag metasurface array of germanium elliptical disks and the vibrational resonance of polymethyl methacrylate (PMMA) molecules in the mid-infrared. Based on the approach of tuning the quasi-BIC resonance by changing the thickness of the coated PMMA layer, we can easily observe the strong coupling phenomenon, manifested by significant spectral splitting and typica

SUBMITTER: Sun K 

PROVIDER: S-EPMC11501134 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature