High-resolution imaging of Rydberg atoms in optical lattices using an aspheric-lens objective in vacuum

We present a high-resolution, simple, and versatile system for imaging ultracold Rydberg atoms in optical lattices. The imaging objective is a single aspheric lens [with a working distance of 20.6 mm and a numerical aperture (NA) of 0.51] placed inside the vacuum chamber. Adopting a large-working-di...

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Bibliographic Details
Published in:Review of scientific instruments 2020-06, Vol.91 (6), p.063202-063202
Main Authors: Shen, Chuyang, Chen, Cheng, Wu, Xiao-Ling, Dong, Shen, Cui, Yue, You, Li, Tey, Meng Khoon
Format: Article
Language:English
Subjects:
Electric fields
High resolution
Image resolution
Lenses
Microscopes
Numerical aperture
Optical lattices
Rydberg states
Scientific apparatus & instruments
Vacuum chambers
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Summary:We present a high-resolution, simple, and versatile system for imaging ultracold Rydberg atoms in optical lattices. The imaging objective is a single aspheric lens [with a working distance of 20.6 mm and a numerical aperture (NA) of 0.51] placed inside the vacuum chamber. Adopting a large-working-distance lens leaves room for electrodes and electrostatic shields to control electric fields around Rydberg atoms. With this setup, we achieve a Rayleigh resolution of 1.10 μm or 1.41λ (λ = 780 nm), limited by the NA of the aspheric lens. For systems of highly excited Rydberg states with blockade radii greater than a few μm, the resolution achieved is sufficient for studying many physical processes of interest.
ISSN:0034-6748
1089-7623
DOI:10.1063/5.0006026