Anomalous dispersion in coupled surface plasmons and excitons
Leila Hesami, Md Golam Rabbani Chowdhury, Mikhail A. Noginov
TL;DR
This paper explores unusual light behavior in polymer materials mixed with dyes, revealing new patterns in how light and matter interact.
Contribution
The study introduces new dispersion phenomena in dye-polymer systems, including multi-branch and fork-like dispersion curves.
Findings
Multi-branch 'staircase' dispersion curves were observed in singly and doubly doped PMMA polymer.
A new 'fork' dispersion branch emerged in the system.
High dye concentration enabled strong coupling without the need for metal.
Abstract
We studied dispersion in Rhodamine laser dyes in the Kretschmann geometry and found (i) multi-branch “staircase” dispersion curves in singly doped and double doped PMMA polymer, (ii) emergence of the new dispersion “fork” branch, (iii) unparallel dispersion and coupling in the mixture of two different dyes, and (iv) effect of high dye concentration on strong coupling without metal.
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Taxonomy
TopicsStrong Light-Matter Interactions · Plasmonic and Surface Plasmon Research · Random lasers and scattering media