Synchrotron infrared nanospectroscopy as a game changer in nanophotonics

Modern technological applications share a variety of common demands, especially the need for smaller functional devices operating with unprecedented data processing power. Hence, nanoscale devices for light traffic are promising candidates for that end. Therefore, a set of advances are required to drive research into real-world applications in this area, including disruptive advances in the available characterization tools. This work presents an overview on how synchrotron infrared nanospectroscopy has contributed to the progress of nanophotonics. Technique description, data processing, and recent studies highlight the uniqueness of the technique for accessing nano-optical phenomena in novel quantum materials. (AU)