Robust single-sideband-modulated Raman light generation for atom interferometry by FBG-based optical rectangular filtration
| Autor: | Wang, Guochao, Wang, Yaning, Ying, Kang, Zhang, Huankai, Zhang, Xu, Li, Qixue, Li, Xuan, Wang, Enlong, Yu, Xiao, Jia, Aiai, Yan, Shuhua, Yang, Jun, Zhu, Lingxiao |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1364/OE.463405 |
| Popis: | Low-phase-noise and pure-spectrum Raman light is vital for high-precision atom interferometry by two-photon Raman transition. A preferred and prevalent solution for Raman light generation is electro-optic phase modulation. However, phase modulation inherently brings in double sidebands, resulting in residual sideband effects of multiple laser pairs beside Raman light in atom interferometry. Based on a well-designed rectangular fiber Bragg grating and an electro-optic modulator, optical single-sideband modulation has been realized at 1560 nm with a stable suppression ratio better than -25 dB despite of intense temperature variations. After optical filtration and frequency doubling, a robust phase-coherent Raman light at 780 nm is generated with a stable SNR of better than -19 dB and facilitates measuring the local gravity successfully. This proposed all-fiber single-sideband-modulated Raman light source, characterized as robust, compact and low-priced, is practical and potential for field applications of portable atom interferometry. Comment: 12 pages, 7 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|