Characteristics of integrated magneto-optical traps for atom chips

Details Characteristics of integrated magneto-optical traps for atom chips Characteristics of integrated magneto-optical traps for atom chips

2011-01-04

arxiv.org/abs/1101.0686v1

Physics

Atomic Physics

Scientific paper

We investigate the operation of pyramidal magneto-optical traps (MOTs) microfabricated in silicon. Measurements of the loading and loss rates give insight into the role of the nearby surface in the MOT dynamics. Studies of the fluorescence versus laser frequency and intensity allow us to develop a simple theory of operation. The number of $^{85}$Rb atoms trapped in the pyramid is approximately $L^6$, where $L \lesssim 6$ is the size in mm. This follows quite naturally from the relation between capture velocity and size and differs from the $L^{3.6}$ often used to describe larger MOTs. Our results constitute substantial progress towards fully integrated atomic physics experiments and devices.

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