中国物理B ›› 2016, Vol. 25 ›› Issue (12): 123701-123701.doi: 10.1088/1674-1056/25/12/123701

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Investigation of the thermal adaptability for a mobile cold atom gravimeter

Qi-Yu Wang(王启宇), Zhao-Ying Wang(王兆英), Zhi-Jie Fu(付志杰), Qiang Lin(林强)   

  1. 1. Institute of Optics, Department of Physics, Zhejiang University, Hangzhou 310027, China;
    2. Center for Optics and Optoelectronics Research, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
  • 收稿日期:2016-06-02 修回日期:2016-08-18 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: Zhao-Ying Wang, Qiang Lin E-mail:zhaoyingwang@zju.edu.cn;qlin@zju.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174249 and 61475139), the National High Technology Research and Development Program of China (Grant No. 2011AA060504), the National Basic Research Program of China (Grant No. 2013CB329501), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2016FZA3004).

Investigation of the thermal adaptability for a mobile cold atom gravimeter

Qi-Yu Wang(王启宇)1, Zhao-Ying Wang(王兆英)1, Zhi-Jie Fu(付志杰)1, Qiang Lin(林强)1,2   

  1. 1. Institute of Optics, Department of Physics, Zhejiang University, Hangzhou 310027, China;
    2. Center for Optics and Optoelectronics Research, College of Science, Zhejiang University of Technology, Hangzhou 310023, China
  • Received:2016-06-02 Revised:2016-08-18 Online:2016-12-05 Published:2016-12-05
  • Contact: Zhao-Ying Wang, Qiang Lin E-mail:zhaoyingwang@zju.edu.cn;qlin@zju.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11174249 and 61475139), the National High Technology Research and Development Program of China (Grant No. 2011AA060504), the National Basic Research Program of China (Grant No. 2013CB329501), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2016FZA3004).

摘要:

The cold atom gravimeter offers the prospect of a new generation of inertial sensors for field applications. We accomplish a mobile atom gravimeter. With the compact and stable system, a sensitivity of 1.4×10-7 g·Hz-1/2 is achieved. Moreover, a continuous gravity monitoring of 80 h is carried out. However, the harsh outdoor environment is a big challenge for the atom gravimeter when it is for field applications. In this paper, we present the preliminary investigation of the thermal adaptability for our mobile cold atom gravimeter. Here, we focus on the influence of the air temperature on the performance of the atom gravimeter. The responses to different factors (such as laser power, fiber coupling efficiency, etc.) are evaluated when there is a great temperature shift of 10℃. The result is that the performances of all the factors deteriorate to different extent, nevertheless, they can easily recover as the temperature comes back. Finally, we conclude that the variation of air temperature induces the increase of noise and the system error of the atom gravimeter as well, while the process is reversible with the recovery of the temperature.

关键词: atom gravimeter, the environmental adaptability, atom interferometer

Abstract:

The cold atom gravimeter offers the prospect of a new generation of inertial sensors for field applications. We accomplish a mobile atom gravimeter. With the compact and stable system, a sensitivity of 1.4×10-7 g·Hz-1/2 is achieved. Moreover, a continuous gravity monitoring of 80 h is carried out. However, the harsh outdoor environment is a big challenge for the atom gravimeter when it is for field applications. In this paper, we present the preliminary investigation of the thermal adaptability for our mobile cold atom gravimeter. Here, we focus on the influence of the air temperature on the performance of the atom gravimeter. The responses to different factors (such as laser power, fiber coupling efficiency, etc.) are evaluated when there is a great temperature shift of 10℃. The result is that the performances of all the factors deteriorate to different extent, nevertheless, they can easily recover as the temperature comes back. Finally, we conclude that the variation of air temperature induces the increase of noise and the system error of the atom gravimeter as well, while the process is reversible with the recovery of the temperature.

Key words: atom gravimeter, the environmental adaptability, atom interferometer

中图分类号:  (Atom interferometry techniques)

  • 37.25.+k
42.60.Lh (Efficiency, stability, gain, and other operational parameters)