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Design and optical response of planar chiral plasmonic nanoparticle arrays

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Perustieteiden korkeakoulu | Master's thesis

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SCI3107

Language

en

Pages

32+3

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Abstract

Plasmonic lattices offer a wide range of applications in physics from optics to quantum mechanics fundamentals. Seemingly distinct branches, these concepts can be realized on a single chip utilizing chiral plasmonic lattices combined with quantum emitters to achieve Bose-Einstein condensation. This thesis is presented as a preliminary work for BEC in planar chiral plasmonics. The study involves the numerical design, fabrication, and experimental measurements of a variety of 2-dimensional chiral plasmonic structures in an asymmetric environment of refractive index. Two different substrate-superstrate pairs are investigated for comparison with a refractive index mismatch Δ𝑛 ≈ 0.5. The samples are tested for their SLR dispersion relations and chiral responses. The measurements reveal the chiroptical properties of the samples, which show symmetrical circular dichroism for different handedness of the nanoparticle.

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Supervisor

Törmä, Päivi

Thesis advisor

Mamonov, Evgeny
Eyvazi Badelbo, Sioneh

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