Active Plasmonic Devices: Based on Magnetoplasmonic by Diana Martín Becerra

By Diana Martín Becerra

This thesis investigates the influence of the magnetic box on propagating floor plasmon polaritons (SPPs), or floor plasmons for brief. in particular, it makes a speciality of utilizing the magnetic box as an exterior agent to change the houses of the SPPs, and for that reason attaining lively units. floor plasmons are evanescent waves that come up at metal–dielectric interfaces. they are often strongly limited (beyond the sunshine diffraction limit), and supply a powerful enhancement of the electromagnetic box on the interface. those waves have resulted in the advance of plasmonic circuitry, that's a key candidate in its place 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 viewpoint, the booklet 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 suitable impression on it, basic how you can improve it, its spectral dependence, and the hugely promising probability of utilizing the program for biosensing. The thesis finally arrives on the end that this system offers values of modulations just like different energetic equipment utilized in plasmonics.

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Therefore, it will radiate light causing losses, which is not the desired effect. This “depolarization” of the plasmon happens also in the longitudinal configuration (ε yz = 0). The suitable MO configuration when dealing with SPPs in then the transverse one (εx z = 0). e. the wave stays a TM wave. Since for SPPs these field components are related by Eqs. 5, we can intuitively see that their relative variation gives rise to a modification of the SPP wavevector, as it will be explained in detail in the following section.

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