Realization of a scalable Laguerre–Gaussian mode sorter based on a robust radial mode sorter
D. Fu, Y. Zhou, R. Qi, S. Oliver, Y. Wang, S. M. H. Rafsanjani, J. Zhao, M. Mirhosseini, Z. Shi, P. Zhang, and R. W. Boyd, Optics Express 26, 33057-33065 (2018).
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