Focusing of Laguerre-Gaussian beams — by Guillermo F. Quinteiro on

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Focused fields exhibit interesting features not present in their paraxial counterpart. We introduce here the topic and one of the main qual...

magnetic optical transitions in quantum dots: part 1 — by Guillermo F. Quinteiro on

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Focused beams of twisted light can be dominated by magnetic fields close the the beam axis. What is the effect of these optical magnetic fie...

Ultrafast spin-flip in quantum dots using focused beams — by Guillermo F. Quinteiro on

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Tightly-focused beams may have a strong electric field in the direction of propagation, and can be used at normal incidence to excite specia...

Manipulating quantum dots with twisted light. Part 2: Light Holes — by Guillermo F. Quinteiro on

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Twisted light may have electric and magnetic field simultaneously in all directions. For a tightly-focused beam, the component in the direct...