公开(公告)号：US11175139B2

公开(公告)日：2021-11-16

申请号：US16488398

申请日：2018-02-23

Applicant: IXBLUE ,  INSTITUT D'OPTIQUE GRADUATE SCHOOL ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE DE BORDEAUX

Inventor： Brynle Barrett ,  Baptiste Battelier ,  Philippe Bouyer ,  Fabien Napolitano

IPC: G01C19/58 ,  G01C21/16 ,  G01C19/64

Abstract: Disclosed is a hybrid inertial measurement system including a cold atom interferometric inertial sensor having a laser source generating a sequence of laser pulses towards a cold atom burst and a conventional inertial sensor attached to the inertial reference frame of the interferometric inertial sensor. The hybrid system includes a signal processing system suitable for receiving an inertial measurement signal from the conventional inertial sensor and for generating in real time a non-linear frequency modulation signal, the feedback loop electronic system being configured to modulate in real time the central optical frequency of the laser according to the modulation signal, such that the cold atom interferometric inertial sensor generates a first hybrid inertial measurement signal by atomic interferometry corrected for the relative movements of the inertial reference frame.

公开(公告)号：US11744003B2

公开(公告)日：2023-08-29

申请号：US16766385

申请日：2018-11-22

Applicant: IXBLUE ,  INSTITUT D'OPTIQUE GRADUATE SCHOOL ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE DE BORDEAUX

Inventor： Henri Porte ,  Baptiste Battelier

IPC: H01S5/00 ,  H05H3/04 ,  G02F1/01 ,  G02F1/31 ,  G02F1/355 ,  G02F1/37 ,  H01S3/00 ,  H01S3/067 ,  H01S3/13 ,  H01S5/042 ,  H01S5/0687 ,  H01S5/125 ,  H01S5/50

CPC classification number: H05H3/04 ,  G02F1/011 ,  G02F1/31 ,  G02F1/3551 ,  G02F1/3558 ,  G02F1/37 ,  H01S3/0064 ,  H01S3/0085 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/1305 ,  H01S5/0064 ,  H01S5/0085 ,  H01S5/0092 ,  H01S5/0428 ,  H01S5/0687 ,  H01S5/125 ,  H01S5/50 ,  G02F2202/20 ,  G02F2203/50

Abstract: Disclosed is a device for interaction between a laser beam and a hyperfine energy transition of a chemical species. The device further includes an electro-optic modulator with a single sideband with an input optical waveguide suitable for receiving a source laser beam and an output optical waveguide suitable for generating an output laser beam and an electronic system suitable for generating and applying, simultaneously, a first modulated electrical signal, sin(Ω1t)) to a first hyperfrequency pulse on a first high-frequency electrode of the electro-optic modulator and, respectively, another modulated electrical signal, cos(Ω1t)) to the first pulse on another high-frequency electrode of the electro-optic modulator, in such a way as to frequency-switch the output laser beam to a first optical frequency offset from the first pulse with respect to the initial optical frequency.

公开(公告)号：US11328829B2

公开(公告)日：2022-05-10

申请号：US17227023

申请日：2021-04-09

Applicant: IXBLUE

Inventor： Pierrick Cheiney ,  Baptiste Gouraud ,  David Brynle Barrett ,  Baptiste Battelier ,  Philippe Bouyer

IPC: G21K1/00 ,  G01P15/093 ,  G02B5/18 ,  G02B27/28

Abstract: Disclosed is an atomic interferometer including a source of atoms, a laser source and a magnetic field generating device, a polarizer, a system for adjusting a detuning between two optical frequencies of the incident laser beam, a two-dimensional diffraction grating arranged in such a way as to receive the incident laser beam and to form by diffraction at least three diffracted beams, a controller configured to select a combination of an optical frequency detuning, a polarization state and a magnetic field, the combination being adapted to select a first pair of laser beams among the pairs of beams formed from the incident laser beam and the diffracted beams, the pair of laser beams being applied in such a way as to interact with the cloud of atoms by multi-photon transitions and to detect an acceleration of the cloud of atoms along a measurement direction.