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Influence of spacer layer on enhancement of nanoplasmon-assisted random lasing
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10.1063/1.4800776
/content/aip/journal/apl/102/13/10.1063/1.4800776
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/13/10.1063/1.4800776
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Figures

Image of FIG. 1.
FIG. 1.

(a) Schematic illustration of the random laser consisting of Au-NPs immobilized on a glass substrate, PVP spacer layer and MEH-PPV-F8BT polymer composite layer. (b) Atomic force microscopy image of Au-NPs immobilized on the sample. Inset shows a higher magnification of Au-NPs.

Image of FIG. 2.
FIG. 2.

Spectral overlap of the surface plasmon resonance of bare Au-NPs (B, dash dot, blue) and PVP covered Au-NPs (C, short dash, green) with excitation (A, dash, orange) and emission (D, solid, red) spectra of polymer.

Image of FIG. 3.
FIG. 3.

The emission of random laser without any spacer layer excited by 4μJ laser light at 532 nm. Inset shows the emission intensity as a function of the pump energy.

Image of FIG. 4.
FIG. 4.

Evolution of the random laser emission spectra as a function of pump energy for a sample with average spacer layer of 15 nm. Emission modes (narrow spikes) of random laser were increased in comparison to the laser without any spacer layer.

Image of FIG. 5.
FIG. 5.

(a) Laser emission intensity as a function of pump energy for random laser without spacer layer (circle, black) and with PVP spacer layer of 15 nm (square, green) and 30 nm (triangle, red). (b) Emission intensity as a function of pump energy for the random laser with average spacer layer of 30 (triangle, red), 50 (square, royal blue), and 70 nm (circle, brown).

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/content/aip/journal/apl/102/13/10.1063/1.4800776
2013-04-05
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of spacer layer on enhancement of nanoplasmon-assisted random lasing
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/13/10.1063/1.4800776
10.1063/1.4800776
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