Piloting method of a laser system of an absolute gravimetric measurement device by atomic interferometry for geophysical applications particularly for monitoring hydrocarbon reservoirs

摘要

The present invention relates to a piloting method of a laser system of an absolute gravimetric measurement device by atomic interferometry particularly suitable for on-site applications and advantageously used in the geophysical field, comprising the following steps: generating (101) the cooling, entrapment, manipulation, thrust and detection bands of a plurality of atoms; - cooling (102) the plurality of atoms; - entrapping (103) the plurality of cooled atoms in a three-dimensional magneto-optical trap; - releasing (104) the plurality of atoms in free fall in an ultra-vacuum system (14); - performing (107) an interferometric sequence; - performing (108) a detection; wherein the release step (104) comprises the step which consists in the quenching (109) of the three- dimensional magneto-optical trap through the contemporaneous extinction of said bands for producing a three-dimensional magneto-optical trap (32) and a trap magnetic field.