Determining Vortex-Beam Superpositions by Shear Interferometry
AbstractOptical modes bearing optical vortices are important light systems in which to encode information. Optical vortices are robust features of optical beams that do not dissipate upon propagation. Thus, decoding the modal content of a beam is a vital component of the process. In this work, we present a method to decode modal superpositions of light beams that contain optical vortices. We do so using shear interferometry, which presents a simple and effective means of determining the vortex content of a beam, and extract the parameters of the component vortex modes that constitute them. We find that optical modes in a beam are easily determined. Its modal content can be extracted when they are of comparable magnitude. The use of modes of well-defined topological charge, but not well-defined radial-mode content, such as those produced by phase-only encoding, are much easier to diagnose than pure Laguerre–Gauss modes. View Full-Text
Share & Cite This Article
Khajavi, B.; Ureta, J.R.G.; Galvez, E.J. Determining Vortex-Beam Superpositions by Shear Interferometry. Photonics 2018, 5, 16.
Khajavi B, Ureta JRG, Galvez EJ. Determining Vortex-Beam Superpositions by Shear Interferometry. Photonics. 2018; 5(3):16.Chicago/Turabian Style
Khajavi, Behzad; Ureta, Junior R.G.; Galvez, Enrique J. 2018. "Determining Vortex-Beam Superpositions by Shear Interferometry." Photonics 5, no. 3: 16.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.