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Article Dans Une Revue Optics Express Année : 2022

Simple and robust architecture of a laser system for atom interferometry

Résumé

We report a compact and robust architecture of a versatile laser system that allows the implementation of several advanced atom interferometry techniques, such as Bragg diffraction, Bloch oscillations, or single and double Raman diffraction. A low noise, frequency tunable fiber-laser (λ = ~1560 nm) serves as the seed. A couple of fiber-coupled amplifiers followed by two fibered second-harmonic generators produce a pair of phase-locked, frequency-controllable laser beams at 780 nm. Manipulating frequencies of individual laser beams at λ = 1560 nm before the amplifiers, facilitates achieving a maximum relative detuning of ± 20 MHz, while maintaining a constant output power. We present the scheme to implement Raman spectroscopy using our laser system and discuss its advantages. Finally, the overall performance of the laser setup has been evaluated by realizing interferometers in copropagating Ramsey-Raman and counterpropagating Bragg configuration.
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Dates et versions

hal-03561039 , version 1 (15-02-2022)

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Sumit Sarkar, Raphaël Piccon, Sébastien Merlet, Franck Pereira dos Santos. Simple and robust architecture of a laser system for atom interferometry. Optics Express, 2022, 30 (3), pp.3358. ⟨10.1364/OE.447073⟩. ⟨hal-03561039⟩
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