We describe a complete development process of a segmented-blade linear ion trap. Alumina substrate is characterized with an X-ray diffraction and loss-tangent measurement. The blade is laser-micromachined and polished, followed by the sputtering and gold electroplating. Surface roughness is examined at each step of the fabrication via both electron and optical microscopies. On the gold-plated facet, we obtain a height deviation of tens of nanometers in the vicinity of the ion position. Trapping of laser-cooled 174Yb+ ions is demonstrated.
@article{arxiv.2207.06878,
title = {Ion trap with gold-plated alumina: substrate and surface characterization},
author = {Myunghun Kim and Keumhyun Kim and Jungsoo Hong and Hyegoo Lee and Youngil Moon and Wonchan Lee and Sehyun Kim and Taekyun Ha and Jae-Yoon Sim and Moonjoo Lee},
journal= {arXiv preprint arXiv:2207.06878},
year = {2022}
}