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arXiv · 2502.15537

Miniaturized optical system for a chip based cold atom inertial sensor

S. Hello·H. Snijders·B. Wirtschafter·A. Boutin·L. Fulop·F. Seguineau·C. I. Westbrook·A. Brignon·M. Dupont-Nivet
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Abstract

We miniaturized the complex optical system responsible for the cooling, pumping and imaging of an on-chip based cold atom inertial sensor. This optical bench uses bonded miniature optics and includes all the necessary optical functions. The bench has a volume of 35x25x5~cm$^3$. We developed a laser frequency lock adapted to the optical bench using saturated absorption in a rubidium cell. The entire laser source based on frequency doubling of 1.56~$\mu$m fiber lasers, including the control system and the saturated absorption module, fits in a $5U$-rack. Using the miniaturized bench, we realized two and three dimensional magneto optical traps for Rubidium 87 atoms.

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S. Hello, H. Snijders, B. Wirtschafter, A. Boutin, L. Fulop, F. Seguineau, C. I. Westbrook, A. Brignon, M. Dupont-Nivet. 2025-02-21. Miniaturized optical system for a chip based cold atom inertial sensor. https://arxiv.org/abs/2502.15537

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