A cold atom pyramidal gravimeter with a single laser beam

作者：Bodart Q^*; Merlet S; Malossi N; Dos Santos F Pereira; Bouyer P; Landragin A

来源：Applied Physics Letters, 2010, 96(13): 134101.

DOI：10.1063/1.3373917

• gravimeters
• light interferometry
• measurement by laser beam

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 1.7x10(-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.

• 出版日期2010-3-29