Optoelectronics Letters, Volume. 18, Issue 10, 588(2022)

Multi-channel laser interferometer based on automatic frequency stabilization system for improving coordinate measurement accuracy

Chengkai PANG1...2, Qiongqiong ZHANG1, Hongqiao ZHANG1, Haiyan HUANG1, Zejiang DENG1, and Guang WU13,* |Show fewer author(s)
Author Affiliations
  • 1State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China
  • 2Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing 401120, China
  • 3Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • show less

    A multi-channel laser interferometer (MCLI) is proposed to improve the coordinate measurement accuracy. A 780 nm external cavity laser is locked on the D2 line of 87Rb atom by polarization spectroscopy, and a high frequency stabilized laser source is obtained with a linewidth of 385.8 kHz at root mean square (RMS). The interferometers share the stabilized source and individually install on 4 axes of a coordinate measuring system. As a result, the measurement uncertainty is reduced from 1.2 μm to 0.2 μm within the dynamic measurement range of 1.0 m. The MCLI is adept at integrate and flexible installation, which caters to various applications on precision measurement.

    Tools

    Get Citation

    Copy Citation Text

    PANG Chengkai, ZHANG Qiongqiong, ZHANG Hongqiao, HUANG Haiyan, DENG Zejiang, WU Guang. Multi-channel laser interferometer based on automatic frequency stabilization system for improving coordinate measurement accuracy[J]. Optoelectronics Letters, 2022, 18(10): 588

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Received: Apr. 15, 2022

    Accepted: May. 29, 2022

    Published Online: Jan. 20, 2023

    The Author Email: Guang WU (gwu@phy.ecnu.edu.cn)

    DOI:10.1007/s11801-022-2063-0

    Topics