Abstract
Accurately measuring the figure of optical elements is important for evaluating the effect of wavefront aberrations in atom interferometry gravimeters. In this work, a setup used to measure the figure of optical elements in vacuum has been built, which is composed of figure measurement device, supporting and mobile platform and vacuum chamber. The root-mean-square wavefront error of this device is less than \(\lambda /100\). The figure of optical elements under different pressures has been measured by this setup. The figure root-mean-square value of a quarter waveplate measured under different pressures varies between 32 nm and 37 nm, and the figure distribution of optical element does not change significantly under different pressures. The results indicate that the figure of optical element measured under atmospheric environment could still be applicable after being installed inside vacuum environment in this situation, which may provide new approach for the evaluation of wavefront aberrations effect in atom interferometry gravimeter.
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Acknowledgements
The authors thank Professor Zebing Zhou, Zehuang Lu, Jie Zhang, Xiaochun Duan, Zhi Gao, Dr. Lele Chen and Xiaobing Deng for enlightening discussions. This work is supported by National Natural Science Foundation of China (Grant Nos. 11922404, 11625417, 11727809, and 12004128) and National Key Research and Development Program of China (Grant No. 2020YFC2200200).
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Luo, Q., Ma, X., Zhang, H. et al. Measuring the figure of optical elements in vacuum. Appl. Phys. B 128, 43 (2022). https://doi.org/10.1007/s00340-022-07766-2
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DOI: https://doi.org/10.1007/s00340-022-07766-2