Plasmon-phonon coupling between mid-infrared chiral metasurfaces and molecular vibrations

Optics Express
Md Shamim MahmudXiaodong Yang

Abstract

Plasmon-phonon coupling between metamaterials and molecular vibrations provides a new path for studying mid-infrared light-matter interactions and molecular detection. So far, the coupling between the plasmonic resonances of metamaterials and the phonon vibrational modes of molecules has been realized under linearly polarized light. Here, mid-infrared chiral plasmonic metasurfaces with high circular dichroism (CD) in absorption over 0.65 in the frequency range of 50 to 60 THz are demonstrated to strongly interact with the phonon vibrational resonance of polymethyl methacrylate (PMMA) molecules at 52 THz, under both left-handed and right-handed circularly polarized (LCP and RCP) light. The mode splitting features in the absorption spectra of the coupled metasurface-PMMA systems under both circular polarizations are studied in PMMA layers with different thicknesses. The relation between the mode splitting gap and the PMMA thickness is also revealed. The demonstrated results can be applied in areas of chiral molecular sensing, thermal emission, and thermal energy harvesting.

References

Oct 13, 2009·Nature Materials·A V KabashinA V Zayats
Nov 3, 2009·Proceedings of the National Academy of Sciences of the United States of America·Ronen AdatoHatice Altug
Apr 6, 2011·Nano Letters·D J SheltonG D Boreman
Jan 26, 2012·Nano Letters·Richard TaubertHarald Giessen
Jun 22, 2013·Chemical Society Reviews·Assaf Ben-MosheGil Markovich
Dec 24, 2014·Reports on Progress in Physics·P Törmä, W L Barnes
Jul 15, 2016·Optics Express·Weiwei WanJie Gao
Aug 18, 2016·Nano Letters·Eva-Maria RollerMauricio Pilo-Pais
Jan 26, 2017·Nature Communications·Yang ZhaoAndrea Alù
Jan 11, 2018·Scientific Reports·Shengxiang WangDouglas H Werner
Jan 18, 2019·Optics Express·Leixin OuyangXiaodong Yang
May 18, 2019·Light, Science & Applications·Yang ChenJie Gao

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Citations

Oct 2, 2020·Optics Letters·Md Shamim MahmudXiaodong Yang
Jul 23, 2021·The Journal of Physical Chemistry Letters·Bar CohnLev Chuntonov

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