A cold atom pyramidal gravimeter with a single laser beam

Details A cold atom pyramidal gravimeter with a single laser beam A cold atom pyramidal gravimeter with a single laser beam

2010-04-29

arxiv.org/abs/1004.5290v1

Physics

Atomic Physics

Scientific paper

We demonstrate a scheme for realizing a compact cold atom gravimeter. The use of a hollow pyramidal configuration allows to achieve all functions: trapping, interferometer and detection with a unique laser beam leading to a drastic reduction in complexity and volume. In particular, we demonstrate a relative sensitivity to acceleration of gravity (g) of 1.7 x 10-7 at one second, with a moderate laser power of 50 mW. This simple geometry combined to such a high sensitivity opens wide perspectives for practical applications (P. Bouyer and A. Landragin, patent number FR2009/000252, 2009).

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