Ptychography-based characterization of wavelength-tunable vortex beams

Publication date	19 July 2021
DOI	http://dx.doi.org/10.1364/cosi.2021.ctu6a.1
Reference	A. Pelekanidis, L. Loetgering and S. Witte: 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, OSA Technical Digest (Optical Society of America), 2021.
Group	EUV Generation & Imaging

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.