| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 02006 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Adaptive and Freeform Optics | |
| DOI | https://doi.org/10.1051/epjconf/202533502006 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533502006
Compact optical pumping system based on offaxis freeform mirror collimation for miniaturized atomic gyroscopes
Key Laboratory of Ultra-Weak Magnetic Field Measurement Technology Ministry of Education, School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 22 September 2025
Abstract
Conventional optical systems for laser beam expansion, collimation, and reflective path configurations in miniaturized atomic gyroscopes face challenges due to excessive volume and component complexity, limiting further optical integration. To overcome this, we propose a compact optical architecture using an off-axis freeform mirror that integrates beam expansion, collimation, and reflection for vertical-cavity surface-emitting lasers (VCSELs) into a single freeform surface. We fabricated an off-axis freeform reflective mirror and a total internal reflection mirror, both achieving polarization preservation above 98%. This approach offers a promising solution for miniaturizing atomic sensors.
© The Authors, published by EDP Sciences, 2025
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