Fabrication and characterization of super-polished wedged borosilicate nano-cells

Abstract

We report on the fabrication of an all-glass vapor cell with a thickness varying linearly between (exactly) 0 and ~ 1 μm. The cell is made in Borofloat glass that allows super polish roughness, a full optical bonding assembling and easy filling with alkali vapors. We detail the challenging manufacture steps and present experimental spectra resulting from off-axis fluorescence and transmission spectroscopy of the Cesium D1 line. The very small surface roughness of 1 Angström rms is promising to investigate the atom-surface interaction or to minimize parasite stray light.

arXiv comment5 pages, 5 figures

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• Proof of the feasibility of a nanocell-based wide-range optical magnetometer
• Circular dichroism in atomic vapors: magnetically induced transitions responsible for two distinct behaviors
• Tutorial on laser locking techniques and the manufacturing of vapor cells for spectroscopy
• Selective reflection from a Potassium atomic layer with a thickness as small as $\lambda /13$
• Features of Magnetically-induced atomic transitions of Rb D${}_1$ line studied by Doppler-free method based on the second derivative of the absorption spectra