北京航空航天大学学报 ›› 2019, Vol. 45 ›› Issue (4): 841-846.doi: 10.13700/j.bh.1001-5965.2018.0473

• 论文 • 上一篇    

基于F-P腔的激光频率稳定传递方法

李欣怡1, 李秀飞1, 全伟1,2   

  1. 1. 北京航空航天大学 仪器科学与光电工程学院, 北京 100083;
    2. 北京航空航天大学 医工交叉创新研究院, 北京 100083
  • 收稿日期:2018-08-14 出版日期:2019-04-20 发布日期:2019-04-26
  • 通讯作者: 全伟 E-mail:quanwei@buaa.edu.cn
  • 作者简介:李欣怡,女,硕士研究生。主要研究方向:量子精密测量与传感技术;李秀飞,男,博士研究生。主要研究方向:量子精密测量与传感技术;全伟,男,研究员。主要研究方向:量子精密测量与传感技术、量子导航技术和多传感器组合导航与组合定姿技术。
  • 基金资助:
    国家自然科学基金(61227902,61773043,61473268,61703025)

Laser frequency stabilization transmission method based on an F-P cavity

LI Xinyi1, LI Xiufei1, QUAN Wei1,2   

  1. 1. School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100083, China;
    2. Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China
  • Received:2018-08-14 Online:2019-04-20 Published:2019-04-26
  • Supported by:
    National Natural Science Foundation of China (61227902,61773043,61473268,61703025)

摘要: 量子传感的发展需要频率高度稳定的激光器为基础,且实现大失谐激光频率稳定通常是提高其精度和灵敏度的关键。针对大失谐激光稳频问题,提出了一种利用法布里-珀罗(F-P)腔传递激光频率稳定性的方法。以饱和吸收稳频法锁定的激光器频率为参考,基于锁相原理,锁定F-P腔长度。利用F-P腔长度这个稳定的参考点,实现目标激光器的频率的精确锁定。实验将目标激光器波长锁定于767.001 nm,失谐频率为150 GHz,锁定后的频率漂移为1 MHz/h。该方法解决了激光大失谐稳频问题,对工程实践和科学研究有重要意义。

关键词: 半导体激光器, 激光稳频技术, 法布里-珀罗(F-P)腔, 激光器调谐, 调制技术

Abstract: Laser frequency stabilization is a common request in the development of quantum sensors. The frequency of the laser often needs to be locked on the detuning far away from the resonance, which is key to improve the sensitivity and accuracy of quantum sensors. Aimed at far off-resonance laser frequency stabilization, a method of frequency stabilization based on a Fabry-Perot (F-P) cavity to transfer the stability from a previously locked laser is proposed. A laser frequency was stabilized by saturated absorption spectrum method as a reference to lock the length of F-P cavity, and the F-P cavity was locked according to a lock-in principle. The highly stable length of F-P cavity, as a benchmark, helped the target laser wavelength to be locked on 767.001 nm, which is as far as 150 GHz from the resonance. The results show that the laser frequency drift is 1 MHz/h after locked. The method solves the problem of far off-resonance laser frequency stabilization, which is of great significance to engineering practice and scientific research.

Key words: semiconductor lasers, laser frequency stabilization, Fabry-Perot (F-P) cavity, laser tuning, modulation

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