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Poster Session

Poster Session III

4:00 pm – 6:00 pm, Thursday June 19 Session S00 Oregon Convention Center:, Exhibit Hall E
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A Robust, Diffraction-limited Objective Lens Design Utilizing COTS Components for AMO Experiments

Poster 110
Presenter: Jiafeng Cui (Oak Ridge National Laboratory)
Authors: Gilles Buchs (Oak Ridge National Laboratory), Christopher Seck (Oak Ridge National Laboratory)

We present a robust imaging system optimized for atomic, molecular, and optical physics experiments. Our design utilizes readily available commercial off-the-shelf (COTS) components to construct an objective lens that corrects for spherical aberrations and efficiently collects atomic fluorescence. Unlike traditional designs that require separate collimation and refocusing stages, our objective directly converges light to the back focal plane with a single lens group. This simplified configuration achieves high photon transmission and diffraction-limited performance across a wide range of wavelengths with adjustable objective length providing substantial flexibility to accommodate experiments with mechanical constraints. Our example objective has a long front working distance of 61 mm and a high numerical aperture (NA) of 0.3, limited by an aperture in the experimental setup (the full objective NA is 0.4). We experimentally verify that the design achieves diffraction-limited resolution at wavelengths from 375 nm to 866 nm. Specifically, when imaging 397 nm light (i.e. from 40Ca+ ion fluorescence), the objective reaches a resolution of 0.87 μm with a 540 μm field of view. Furthermore, the design maintains this performance over a 5 cm range variation of both front and back working distances. Additionally, we develop a method to qualitatively measure the field of view using a calibrated target. This robust, cost-effective, and versatile design is ideal for various AMO experiments, enabling the exploration of diverse quantum phenomena and high-precision measurements.

Funding acknowledgement

Portions of this research are sponsored by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory, managed by UT-Battelle, LLC, for the U. S. Department of Energy. Additional portions of this work are based upon work supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Science Center.

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