IEEE Optoelectronics Global Conference (OGC)

Meta-Polarizer-Lens Based Integrated Optical Probing Scheme for Atomic Magnetometer

Longkun Yu, Jinsheng Hu, Nan Li, Run Xu, Zhaohui Wang, Mao Ye

Published Sep 9, 2025• 0 citations

Abstract

Optically pumped magnetometers (OPMs) have undergone rapid development in recent years. The optical probing system, which plays a crucial role in interrogating quantum state of atoms under external perturbations, is an essential component in OPMs. However, conventional optical probing schemes rely on bulky optical components and tedious adjustment procedures, which hinder their applications in portable or compact scenarios. In this study, a method has been proposed in order to overcome these limitations by a metasurface, which is based on localized - interference effects. With the metasurface, we can simultaneously convert any incident polarized light into linearly polarized light and manipulate its wavefront. It achieves a maximum transmission efficiency of 91.7 % and a focusing efficiency of 91.3 %. Since the fabrication process of our metasurface is compatible with current complementary-metal-oxide-semiconductor (CMOS) fabrication technology, it can be integrated with a vapor cell, which is the core sensing element for many advanced atomic devices. Our study proposes an optical probing scheme suitable for chip-scale OPMs, and laying the foundation for the mass production of other chip-scale atomic devices.

DOI: 10.1109/ogc66041.2025.11262077

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