1. Excimer Laser Induced Spatially Resolved Formation and Implantation of Plasmonic Particles in Glass.
- Author
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Heinz, Maximilian, Meinertz, Jörg, Dubiel, Manfred, and Ihlemann, Jürgen
- Subjects
EXCIMER lasers ,NANOPARTICLES ,OPACITY (Optics) - Abstract
Metallic nanoparticles are important building blocks for plasmonic applications. The spatially defined arrangement of these nanoparticles in a stable glass matrix is obtained here by nanosecond excimer laser irradiation at 193 nm. Two approaches are addressed: (1) Laser induced formation of particles from a dopant material pre-incorporated in the glass, (2) Particle formation and implantation by irradiation of material pre-coated on top of the glass. Silver nanoparticles are formed inside Ag
+ doped glass (method 1). Gold nanoparticles are implanted by irradiation of gold coated glass (method 2). In the latter case, with a few laser pulses the original gold film disintegrates into particles which are then embedded in the softened glass matrix. A micron sized spatial resolution (periodic arrangements with 2 µm period) is obtained in both cases by irradiating the samples with an interference beam pattern generated by a phase mask. The plasmonic absorption of the nanoparticles leads to a contrast of the optical density between irradiated and non-irradiated lines of up to 0.6. [ABSTRACT FROM AUTHOR]- Published
- 2018
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