Nano-imprinted subwavelength gratings as polarizing beamsplitters Julian Wüster, Yannick Bourgin, Patrick Feßer, Arne Behrens and Stefan Sinzinger J. Eur. Opt. Soc.-Rapid Publ., 17 1 (2021) 4 Published online: 24 March 2021 DOI: 10.1186/s41476-021-00149-8