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Seminario Especial de Matemáticas Aplicadas

Doped nematicons


por el

Prof. Noel Smyth

Universidad de Edimburgo

Resumen:
The steering of a self-guided beam in a dye-doped nematic liquid crystal caused by an external illumination or control beam which induces changes in the refractive index of the medium is theoretically analysed. The interaction between the control beam and the dye molecules modifies the anchoring of the nematic molecules, so changing the director orientation in the bulk of the medium. Beam evolution is investigated using a modulation theory approach. It is found that the beam trajectory is independent of the beam profile, as long as this profile is self-similar. Solutions obtained from the modulation theory approach are in excellent agreement with numerical solutions. The implications of the results for the production of optical devices based on liquid crystals will also be discussed.

Lunes 11 de abril, 2011
17:00 hrs.
Salón 200, Edificio Anexo, IIMAS

Informes: coloquiomym@gmail.com, o al 5622-3564.