New paper in European Journal of Physics about vortex beams with a TNLC-SLM
We published a new paper in European Journal of Physics entitled Vortex beam generation and other advanced optics experiments reproduced with a twisted-nematic liquid-crystal display with limited phase modulation.
In this work we propose the use of twisted-nematic liquid-crystal spatial light modulators (TN-LC-SLM) as a useful tool for training students in the manipulation of light beams with phase-only masks. In particular, we focus the work on the realization of phase-only gratings and phase-only spiral phases for the generation of vortex beams, beams carrying orbital angular momentum (OAM). We include different examples, including a optimal triplicator phase grating, and its combination with spiral phase patterns and lens functions to generate a variety of vortex beams.
The paper is included in a special section of the journal devoted to «Advanced Optics», and it is the first publication from the PhD Thesis of Aarón Cofré.