Abstract
Laser-focused atomic deposition is a technique with which nearly resonant light is used to pattern an atom beam. To solve the problem that the result of laser-cooled atoms cannot be monitored during the 30-min depositing time, we present a three-hole mechanically precollimated aperture apparatus. A 425 nm laser light standing wave is used to focus a beam of chromium atoms to fabricate the nanoscale grating. The period of the grating is 213±0.1 nm, the height is 4 nm and the full width at half miximum is 64±6 nm.
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