Polarization gradient light masks in atom lithography B. Brezger, Th. Schulze, P. O. Schmidt, R. Mertens T. Pfau and J. Mlynek Europhys. Lett., 46 2 (1999) 148-153 Published online: 01 December 2003 DOI: 10.1209/epl/i1999-00237-5