Review article — by Guillermo F. Quinteiro on Thursday, September 1, 2022

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We are happy to announce the publication of a review article covering the topic of the interaction of twisted light (optical vortices) with ...

Deriving Bessel beams à la Laguerre-Gauss — by Guillermo F. Quinteiro on Monday, August 20, 2018

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Twisted light can be derived in many ways, for example from potentials, a direct application of Maxwells' equations, or a superposition ...

Versatile excitation of nanoparticles — by Guillermo F. Quinteiro on Wednesday, June 20, 2018

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A single pulse of twisted light can induce transitions to energy levels not accessible using Gaussian beams.

Blog's anniversary: 4 years of posting — by Guillermo F. Quinteiro on Sunday, May 20, 2018

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Four years ago I started this blog with monthly postings on the topic of twisted-light--solids interaction. Most of the posts have been ...

Semiconductor Bloch equations conserving momentum, examples — by Guillermo F. Quinteiro on Friday, April 20, 2018

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We provide examples to the procedure used to study the light-matter interaction with transfer of momentum.

Semiconductor Bloch equations conserving momentum — by Guillermo F. Quinteiro on Tuesday, March 20, 2018

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We sketch a procedure to theoretically study the light-matter interaction without neglecting the orbital angular momentum of light.

Focusing of Laguerre-Gaussian beams — by Guillermo F. Quinteiro on Tuesday, February 20, 2018

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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...

The end of 2017 — by Guillermo F. Quinteiro on Wednesday, December 20, 2017

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I wish all the blog readers a happy end of 2017 and start of 2018. In January the blog will be on holidays, but we resume in February our...

mathieu beams — by Guillermo F. Quinteiro on Monday, November 20, 2017

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Laguerre-Gauss and Bessel Beams are solutions to the wave equation in cylindrical coordinates. But solutions in other coordinates are possib...