Optical characterisation of micro-fabricated Fresnel zone plates for atomic waveguides

Abstract

We optically assess Fresnel zone plates (FZPs) that are designed to guide cold atoms. Imaging of various ring patterns produced by the FZPs gives an average RMS error in the brightest part of the ring of 3% with respect to trap depth. This residue will be due to the imaging system, incident beam shape and FZP manufacturing tolerances. Axial propagation of the potentials is presented experimentally and through numerical simulations, illustrating prospects for atom guiding without requiring light sheets.

arXiv comment10 pages, 5 figures

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Cited by in corpus (3)

• Roadmap on Atomtronics: State of the art and perspective
• Invited Review: Micro-fabricated components for cold atom sensors
• Single-beam grating-chip 3D and 1D optical lattices