Reading time: 10 minutesWritten for: optical engineers, photonics engineers, researchers, technology scouts. Extra-relevant if you are interested in: meta-surfaces, spatially varying polarization (e.g. S-plate, Q-plate, J-plate), HWP, birefringent meta-material. Application examples: Structured light for lithography, Optical tweezers or microscopy; radially symmetric beams for high quality laser cutting. This article was published as part of an […]
Reading time: 8 minutes Written for: optical engineers, photonics engineers, researchers, technology scoutsExtra-relevant if you are interested in: meta-surfaces , HWP, birefringent meta material Versatile design of half wave plates (HWP) based on metamaterials Half-wave plates are one of the standard components one can find in any optical lab next to lenses and neutral density […]
Holograms have always appealed to the imagination of both scientists and the general public. But wide angle and full colour holograms has proven elusive despite many years of research. In this article we explore some of the possibilities for making meta-surface holograms and how they can contribute to this lofty goal.
An attractive feature of meta-surfaces is the ability to encode different functionalities for different incident light, for example wavelength or polarization selective behaviour. This can be achieved by selecting and placing meta-atoms which have simultaneous but different effects for different incident light beams. In this example such a multi-functional meta-surface will be designed. The goal […]
Why is the calculation time so important? A modern optical design process relies on numerical simulations during nearly all phases of the development cycle. Be it checking the feasibility of a great new idea, optimizing the parameters of a proof-of-concept, identifying risks and tolerances in engineering or combinations of those. Perhaps you’re trying to find […]
Getting accurate and fast nano-structure simulations: A benchmark of RCWA and FDTD for meta-surface calculation
It is a common saying that all models are wrong but some models are useful. In that spirit this article investigates the accuracy of the Rigorous Coupled Wave analysis (RCWA) methods implemented in the PlanOpSim software. A comparison is made to the widely known finite difference time domain (FDTD) method. Convergence checks to determine which […]