A Vehicle-portable Ultra-stable Laser for Operating on Highways
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arXiv
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| Format: | Preprint |
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2026
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| author | Jiao, Dongdong Li, Qing Gao, Jing Zhang, Linbo Wu, Mengfan Zang, Qi Wang, Jianing Xu, Guanjun Liu, Tao |
| author_facet | Jiao, Dongdong Li, Qing Gao, Jing Zhang, Linbo Wu, Mengfan Zang, Qi Wang, Jianing Xu, Guanjun Liu, Tao |
| contents | Portable ultra-stable lasers are essential for high-precision measurements. This study presents a 1550 nm vehicle-portable ultra-stable laser designed for continuous real-time operation on highways. We implement several measures to mitigate environmental impacts, including active temperature control with a standard deviation of mK/day to reduce frequency drift of the optical reference cavity, all-polarization-maintaining fiber devices to enhance the robustness of the optical path, and highly integrated electronic units to diminish thermal effects. The performance of the ultra-stable laser is evaluated through real-time beat frequency measurements with another similar ultra-stable laser over a transport distance of approximately 100 km, encompassing rural roads, national roads, urban roads, and expressways. The results indicate frequency stability of approximately 10-12/(0.01s-100 s) during transport, about 5E-14/s while the vehicle is stationary with the engine running, and around 3E-15/s with the engine off, all without active vibration isolation. This work marks the first recorded instance of a portable ultra-stable laser achieving continuous real-time operation on highways and lays a crucial foundation for non-laboratory applications, such as mobile laser communication and dynamic free-space time-frequency comparison. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_02843 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A Vehicle-portable Ultra-stable Laser for Operating on Highways Jiao, Dongdong Li, Qing Gao, Jing Zhang, Linbo Wu, Mengfan Zang, Qi Wang, Jianing Xu, Guanjun Liu, Tao Optics Portable ultra-stable lasers are essential for high-precision measurements. This study presents a 1550 nm vehicle-portable ultra-stable laser designed for continuous real-time operation on highways. We implement several measures to mitigate environmental impacts, including active temperature control with a standard deviation of mK/day to reduce frequency drift of the optical reference cavity, all-polarization-maintaining fiber devices to enhance the robustness of the optical path, and highly integrated electronic units to diminish thermal effects. The performance of the ultra-stable laser is evaluated through real-time beat frequency measurements with another similar ultra-stable laser over a transport distance of approximately 100 km, encompassing rural roads, national roads, urban roads, and expressways. The results indicate frequency stability of approximately 10-12/(0.01s-100 s) during transport, about 5E-14/s while the vehicle is stationary with the engine running, and around 3E-15/s with the engine off, all without active vibration isolation. This work marks the first recorded instance of a portable ultra-stable laser achieving continuous real-time operation on highways and lays a crucial foundation for non-laboratory applications, such as mobile laser communication and dynamic free-space time-frequency comparison. |
| title | A Vehicle-portable Ultra-stable Laser for Operating on Highways |
| topic | Optics |
| url | https://arxiv.org/abs/2601.02843 |