Effect of molecular concentration on spectroscopic properties of poly(methyl methacrylate) thin films doped with rhodamine 6G dye

Laser dyes, in particular, rhodamine 6G (R6G), play an important role in many proof-of-principle demonstrations in metamaterials, nanophotonics, plasmonics, and strong coupling. Despite the numerous experimental and theoretical studies, interpretation of many features in optical spectra of high-conc...

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Bibliographic Details
Published inOptical materials express Vol. 7; no. 12; p. 4286
Main Authors On, C., Tanyi, E. K., Harrison, E., Noginov, M. A.
Format Journal Article
LanguageEnglish
Published Washington Optical Society of America 01.12.2017
Subjects
Absorption spectra
Coupling (molecular)
Dimers
Dyes
Emission spectra
Excitation spectra
Metamaterials
Plasmonics
Polymer films
Polymethyl methacrylate
Rhodamine 6G
Thin films
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Summary:Laser dyes, in particular, rhodamine 6G (R6G), play an important role in many proof-of-principle demonstrations in metamaterials, nanophotonics, plasmonics, and strong coupling. Despite the numerous experimental and theoretical studies, interpretation of many features in optical spectra of high-concentrated R6G dye is still a subject of controversy. In this work, we have measured and interpreted absorption, excitation, and emission spectra of polymeric (PMMA) films doped with R6G dye. In contrast to several reports, our results suggest that the ~495 nm shoulder in the absorption spectrum is chiefly not due to a dimer formation, but is likely owing to vibronic transitions.
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ISSN:2159-3930
2159-3930
DOI:10.1364/OME.7.004286