Dr. Alexandre Bresson Profile

Dr. Alexandre Bresson

at ONERA

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Publications (4)

Proceedings Article | 21 November 2017 Open Access

I.C.E.: a transportable atomic inertial sensor for test in microgravity

R. Nyman, G. Varoquaux, J.-F. Clement, P. Bouyer, G. Santarelli, F. Pereira Dos Santos, A. Clairon, A. Landragin, D. Chambon, F. Lienhart, S. Boussen, A. Bresson

Proceedings Volume 10567, 105672Z (2017) https://doi.org/10.1117/12.2308089

KEYWORDS: Chemical species, Crystals, Interferometry, Magnetism, Interferometers, Rubidium, Laser sources, Fiber lasers, Sensors, Magneto-optics

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Proceedings Article | 20 November 2017 Open Access

A transportable cold atom inertial sensor for space applications

V. Ménoret, R. Geiger, G. Stern, P. Cheinet, B. Battelier, N. Zahzam, F. Pereira Dos Santos, A. Bresson, A. Landragin, P. Bouyer

Proceedings Volume 10565, 1056530 (2017) https://doi.org/10.1117/12.2309256

KEYWORDS: Chemical species, Interferometers, Rubidium, Laser sources, Sensors, Phase shift keying, Interferometry, Semiconductor lasers, Modulation, Astronomical imaging

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Atom interferometry has hugely benefitted from advances made in cold atom physics over the past twenty years, and ultra-precise quantum sensors are now available for a wide range of applications [1]. In particular, cold atom interferometers have shown excellent performances in the field of acceleration and rotation measurements [2,3], and are foreseen as promising candidates for navigation, geophysics, geo-prospecting and tests of fundamental physics such as the Universality of Free Fall (UFF). In order to carry out a test of the UFF with atoms as test masses, one needs to compare precisely the accelerations of two atoms with different masses as they fall in the Earth’s gravitational field. The sensitivity of atom interferometers scales like the square of the time during which the atoms are in free fall, and on ground this interrogation time is limited by the size of the experimental setup to a fraction of a second. Sending an atom interferometer in space would allow for several seconds of excellent free-fall conditions, and tests of the UFF could be carried out with precisions as low as 10^-15 [4].

However, cold atoms experiments rely on complex laser systems, which are needed to cool down and manipulate the atoms, and these systems are usually very sensitive to temperature fluctuations and vibrations. In addition, when operating an inertial sensor, vibrations are a major issue, as they deteriorate the performances of the instrument. This is why cold atom interferometers are usually used in ground based facilities, which provide stable enough environments. In order to carry out airborne or space-borne measurements, one has to design an instrument which is both compact and stable, and such that vibrations induced by the platform will not deteriorate the sensitivity of the sensor.

We report on the operation of an atom interferometer on board a plane carrying out parabolic flights (Airbus A300 Zero-G, operated by Novespace). We have constructed a compact and stable laser setup, which is well suited for onboard applications. Our goal is to implement a dual-species Rb-K atom interferometer in order to carry out a test of the UFF in the plane. In this perspective, we are designing a dual-wavelength laser source, which will enable us to cool down and coherently manipulate the quantum states of both atoms. We have successfully tested a preliminary version of the source and obtained a double species magneto-optical trap (MOT).

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Proceedings Article | 17 November 2017 Open Access

High power pulsed fiber laser development for Co2 space based dial system

Guillaume Canat, Julien Le Gouët, Laurent Lombard, Alexandre Bresson, Didier Goular, Agnès Dolfi-Bouteyre, Sophie Duzellier, Denis Boivin, Johan Nilsson, Jayata Sahu, Sylvain Bordais

Proceedings Volume 10563, 105630T (2017) https://doi.org/10.1117/12.2304221

KEYWORDS: Fiber lasers, Optical amplifiers, Erbium, Diodes, Fiber amplifiers, Laser development, Astronomical imaging, Laser stabilization, Oscillators, Semiconductor lasers

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Proceedings Article | 10 November 2003 Paper

Simultaneous temperature, concentration, and velocity fields measurements in a turbulent heated jet using combined laser-induced fluorescence and PIV

Alexandre Bresson, Christophe Brossard, Pierre Gicquel, Frederic Grisch

Proceedings Volume 5191, (2003) https://doi.org/10.1117/12.507448

KEYWORDS: Particles, Temperature metrology, Luminescence, Cameras, Spatial resolution, Laser induced fluorescence, Velocity measurements, Turbulence, Molecules, Pulsed laser operation

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