We demonstrate monochromatic ptychographic reconstructions of vortex beams within a range of 0.2λ0. Modal decomposition of the vortices reveal that the pu-rity of the dominant LG01 mode exceeds 85% for the full investigated bandwidth.

OSA Technical Digest (Optical Society of America)
EUV Generation & Imaging

Pelekanidis, A., Loetgering, L., & Witte, S. (2021). Ptychography-based characterization of wavelength-tunable vortex beams. In Computational Optical Sensing and Imaging, COSI 2021 - Part of OSA Imaging and Applied Optics Congress 2021, paper CTu6A.1. doi:10.1364/cosi.2021.ctu6a.1