By Diana Martín Becerra
This thesis investigates the impression of the magnetic box on propagating floor plasmon polaritons (SPPs), or floor plasmons for brief. exceptionally, it specializes in utilizing the magnetic box as an exterior agent to change the homes of the SPPs, and as a result attaining energetic units. floor plasmons are evanescent waves that come up at metal–dielectric interfaces. they are often strongly restricted (beyond the sunshine diffraction limit), and supply a powerful enhancement of the electromagnetic box on the interface. those waves have ended in the improvement of plasmonic circuitry, that's a key candidate as a substitute to digital circuitry and standard optical telecommunication units, because it is quicker than the previous and no more cumbersome than the latter.
Adopting either a theoretical and an experimental standpoint, the ebook analyzes the magnetic modulation in SPPs through an interferometer engraved in a multilayer combining Au and Co. during this interferometer, which acts like a modulator, the SPP magnetic modulation is studied intimately, as are the parameters that experience a proper impression on it, uncomplicated how you can increase it, its spectral dependence, and the hugely promising chance of utilizing the program for biosensing. The thesis finally arrives on the end that this technique grants values of modulations just like different lively tools utilized in plasmonics.
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Additional info for Active Plasmonic Devices: Based on Magnetoplasmonic Nanostructures
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Gopal, M. Nur-E-Alam, M. R. Yakovlev, K. K. Zvezdin, M. Bayer, New J. Phys. 15, 075024 (2013) 87. F. B. Gonzalez-Diaz, A. Garcia-Martin, G. Armelles, New J. Phys. 15, 075025 (2013) Chapter 3 Magnetoplasmonic Interferometry This chapter contains all the information about plasmonic and magnetoplasmonic interferometry. It is explained how it works, the basic parameters implied and the methodology used to obtain information about the SPP magnetic modulation, as well as its capability as a device. Interferometry is known as a very sensitive and reliable technique both at the micro- and macro-scale, and it has been applied during many years and in many areas such as astrophysics [1, 2], imaging [3–5], sensing , or integrated photonics [7, 8].
When the incident light has a component of the electric field parallel to the extra momentum supplied by the defect, a SPP will be launched in that direction (Fig. 7). For example, a dot will provide an extra momentum (scattered light) in all directions of the interface plane, therefore the SPP launching will be marked by the polarization of the incident light (see Fig. 7b, d, f). A line, on the other hand, provides a momentum (scatters light) perpendicular to its longest side, thus the SPP will be excited only when the electric field is in that direction too [4, 7, 34] (Fig.