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Strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye.

Baieva SV, Hakala TK, Toppari JJ - Nanoscale Res Lett (2012)

Bottom Line: Dispersion curves for surface plasmon polaritons on samples with a thin layer of silver covered with Sulforhodamine 101 molecules embedded in SU-8 polymer are obtained experimentally by reflectometry measurements and compared to the dispersion of samples without molecules.Clear Rabi splittings, with energies up to 360 and 190 meV, are observed at the positions of the dye absorption maxima.The split energies are dependent on the number of Sulforhodamine 101 molecules involved in the coupling process.

View Article: PubMed Central - HTML - PubMed

Affiliation: Nanoscience Center, Department of Physics, P,O, Box 35, FI-40014, University of Jyväskylä, Finland. svitlana.v.baieva@jyu.fi.

ABSTRACT
We demonstrate a strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye molecules. Dispersion curves for surface plasmon polaritons on samples with a thin layer of silver covered with Sulforhodamine 101 molecules embedded in SU-8 polymer are obtained experimentally by reflectometry measurements and compared to the dispersion of samples without molecules. Clear Rabi splittings, with energies up to 360 and 190 meV, are observed at the positions of the dye absorption maxima. The split energies are dependent on the number of Sulforhodamine 101 molecules involved in the coupling process. Transfer matrix and coupled oscillator methods are used to model the studied multilayer structures with a great agreement with the experiments. Detection of the scattered radiation after the propagation provides another way to obtain the dispersion relation of the surface plasmon polaritons and, thus, provides insight into dynamics of the surface plasmon polariton/dye interaction, beyond the refrectometry measurements.PACS: 42.50.Hz, 33.80.-b, 78.67.-n.

No MeSH data available.


Related in: MedlinePlus

Reflectance measurements and the transfer matrix theory compared. Experimentally obtained energy dependences of the observed reflectance spectrum minima as a function of the angle of incidence (black dots). Calculated reflectance coefficients as a function of the excitation energy and the angle of incidence for 1 mg (a), 2 mg (b), 3 mg (c), and 4 mg (d) samples. Red line is the measured absorbance from the corresponding reference sample without silver as a function of excitation energy (scale on the top axis).
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Figure 3: Reflectance measurements and the transfer matrix theory compared. Experimentally obtained energy dependences of the observed reflectance spectrum minima as a function of the angle of incidence (black dots). Calculated reflectance coefficients as a function of the excitation energy and the angle of incidence for 1 mg (a), 2 mg (b), 3 mg (c), and 4 mg (d) samples. Red line is the measured absorbance from the corresponding reference sample without silver as a function of excitation energy (scale on the top axis).

Mentions: where εS is a frequency independent dielectric permittivity of the media that is hosting the SR101 molecule (SU-8 in here). Ai is a dimensionless parameter characterizing the strength of an oscillation with the resonance frequency ω0i, and γi describes damping of such an oscillation. With SR101, i = 1, 2. We deduced the parameters Ai, ω0i, and γi from the measured absorption spectra of the reference samples containing only the SR101 resist spun on the glass substrate. The list of the parameters used in the fitting are presented in Table 1. Figure 3 shows the calculated reflectance coefficient of the model system together with the experimental data.


Strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye.

Baieva SV, Hakala TK, Toppari JJ - Nanoscale Res Lett (2012)

Reflectance measurements and the transfer matrix theory compared. Experimentally obtained energy dependences of the observed reflectance spectrum minima as a function of the angle of incidence (black dots). Calculated reflectance coefficients as a function of the excitation energy and the angle of incidence for 1 mg (a), 2 mg (b), 3 mg (c), and 4 mg (d) samples. Red line is the measured absorbance from the corresponding reference sample without silver as a function of excitation energy (scale on the top axis).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3362758&req=5

Figure 3: Reflectance measurements and the transfer matrix theory compared. Experimentally obtained energy dependences of the observed reflectance spectrum minima as a function of the angle of incidence (black dots). Calculated reflectance coefficients as a function of the excitation energy and the angle of incidence for 1 mg (a), 2 mg (b), 3 mg (c), and 4 mg (d) samples. Red line is the measured absorbance from the corresponding reference sample without silver as a function of excitation energy (scale on the top axis).
Mentions: where εS is a frequency independent dielectric permittivity of the media that is hosting the SR101 molecule (SU-8 in here). Ai is a dimensionless parameter characterizing the strength of an oscillation with the resonance frequency ω0i, and γi describes damping of such an oscillation. With SR101, i = 1, 2. We deduced the parameters Ai, ω0i, and γi from the measured absorption spectra of the reference samples containing only the SR101 resist spun on the glass substrate. The list of the parameters used in the fitting are presented in Table 1. Figure 3 shows the calculated reflectance coefficient of the model system together with the experimental data.

Bottom Line: Dispersion curves for surface plasmon polaritons on samples with a thin layer of silver covered with Sulforhodamine 101 molecules embedded in SU-8 polymer are obtained experimentally by reflectometry measurements and compared to the dispersion of samples without molecules.Clear Rabi splittings, with energies up to 360 and 190 meV, are observed at the positions of the dye absorption maxima.The split energies are dependent on the number of Sulforhodamine 101 molecules involved in the coupling process.

View Article: PubMed Central - HTML - PubMed

Affiliation: Nanoscience Center, Department of Physics, P,O, Box 35, FI-40014, University of Jyväskylä, Finland. svitlana.v.baieva@jyu.fi.

ABSTRACT
We demonstrate a strong coupling between surface plasmon polaritons and Sulforhodamine 101 dye molecules. Dispersion curves for surface plasmon polaritons on samples with a thin layer of silver covered with Sulforhodamine 101 molecules embedded in SU-8 polymer are obtained experimentally by reflectometry measurements and compared to the dispersion of samples without molecules. Clear Rabi splittings, with energies up to 360 and 190 meV, are observed at the positions of the dye absorption maxima. The split energies are dependent on the number of Sulforhodamine 101 molecules involved in the coupling process. Transfer matrix and coupled oscillator methods are used to model the studied multilayer structures with a great agreement with the experiments. Detection of the scattered radiation after the propagation provides another way to obtain the dispersion relation of the surface plasmon polaritons and, thus, provides insight into dynamics of the surface plasmon polariton/dye interaction, beyond the refrectometry measurements.PACS: 42.50.Hz, 33.80.-b, 78.67.-n.

No MeSH data available.


Related in: MedlinePlus