Absorptive masks of light: A useful tool for spatial probing in atom optics
Keller C., R. Abfalterer, S. Bernet, M.K. Oberthaler, J. Schmiedmayer, A. Zeilinger
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 16, 3850-3854 (1998)