Convocação para a 169ª reunião ordinária do Colegiado Delegado

24/06/2015 12:09

Memorando Circular n.º 001/2015/PPGFSC                                                                                                                                                                                                                                            Florianópolis, 24 de junho de 2015.

Aos Membros do Colegiado Delegado do Programa de Pós-Graduação em Física

Assunto: Convocação para a 169ª reunião ordinária do Colegiado Delegado

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Seminário com o Mikhail Igorevich Vasilevskiy – 18 de junho de 2015 – 10h15min

15/06/2015 10:15

 O PROGRAMA DE PÓS-GRADUAÇÃO EM FÍSICA convida para o seminário:  

 GRAPHENE-BASED NANOSTRUCTURES: PLASMONICS IN THE THZ RANGE*

Mikhail Igorevich Vasilevskiy

Universidade do Minho – Portugal

 *Evento de reposição da disciplina seminário

 Resumo:

The talk will consist of two parts dedicated, respectively, to linear and non-linear optical properties of graphene in the terahertz (THz) spectral range, related to its unique electronic spectrum (gapless and linear in momentum).

In the first part, surface plasmon-polaritons (SPPs) in graphene will be discussed along with several possible ways of their coupling to propagating electromagnetic waves in the THz range, such as (i) the attenuated total reflection (ATR) method employing a prism, (ii) graphene-based gratings or graphene monolayers with modulated conductivity, (iii) a metallic stripe or a needle tip on top of the graphene layer. Potentially interesting for applications SPP effects, such as switching, modulation and polarization of THz radiation will be considered.

In the second part some effects of the optical non-linearity of the surrounding medium or of graphene itself will be considered, including mixed polariton solitons of TE type, optical bistability of a graphene layer, and lattice solitons in a multilayer stack of graphene sheets.

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