Výsledky vyhledávání

Structured metallic tips are increasingly important for optical spectroscopies such as tip-enhanced Raman spectroscopy (TERS), with plasmonic resonances frequently cited as a mechanism for electric field enhancement. We probe the local optical respon

Externí odkaz: http://arxiv.org/abs/1607.06591

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Anomalous spectral shift of near- and far-field plasmonic resonances in nano-gaps

Autor: Lombardi, Anna, Demetriadou, Angela, Weller, Lee, Andrae, Patrick, Benz, Felix, Chikkaraddy, Rohit, Aizpurua, Javier, Baumberg, Jeremy J.

The near-field and far-field spectral response of plasmonic systems are often assumed to be identical, due to the lack of methods that can directly compare and correlate both responses under similar environmental conditions. We develop a widely-tunea

Externí odkaz: http://arxiv.org/abs/1602.00962

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Dissertation/ Thesis

Absolute absorption and dispersion in a thermal Rb vapour at high densities and high magnetic fields

Autor: Weller, Lee

This thesis presents a comparative study of the measured and calculated absolute absorption and dispersion properties of the Rb D lines through a dense thermal vapour in the absence and presence of an applied magnetic field. A detailed theoretical mo

Externí odkaz: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.578212

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ElecSus: A program to calculate the electric susceptibility of an atomic ensemble

Autor: Zentile, Mark A., Keaveney, James, Weller, Lee, Whiting, Daniel J., Adams, Charles S., Hughes, Ifan G.

Publikováno v: Comp. Phys. Comm. 189 (2015) 162-174

We present a computer program and underlying model to calculate the electric susceptibility of a gas, which is essential to predict its absorptive and dispersive properties. Our program focusses on alkali-metal vapours where we use a matrix represent

Externí odkaz: http://arxiv.org/abs/1409.1873

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