Chinese Optics Letters, Volume. 22, Issue 1, 011204(2024)

High synchronization absolute distance measurement using a heterodyne and superheterodyne combined interferometer

Ziqi Yin1,2, Fangfei Li1,2, Yunke Sun1,2, Yun Zou1,2, Yan Wang1,2, Hongxing Yang1,2、*, Pengcheng Hu1,2, Haijin Fu1,2, and Jiubin Tan1,2
Author Affiliations
  • 1Center of Ultra-precision Optoelectronic Instrument, Harbin Institute of Technology, Harbin 150080, China
  • 2Key Laboratory of Ultra-precision Intelligent Instrumentation (Harbin Institute of Technology), Ministry of Industry and Information Technology, Harbin 150080, China
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    Figures & Tables(5)
    Schematic diagram of the main composition of the MWI based on heterodyne and superheterodyne absolute distance measurement method with a He–Ne laser. HWP, half-wave plate; PBS, polarizing beam splitter; M, mirror; AOFS, acousto-optical frequency shifter; QWP, quarter-wave plate; NPBS, nonpolarizing beam splitter; RR, retroreflector; P, polarizer; PD, photodetector.
    Generation principle of multiwavelengths.
    Schematic setup for the synchronous detection and demodulation. A, amplifier; LPF, low-pass filter.
    Phase measurement data when the phase difference was set to (a) 90° and (b) 180°.
    (a) Experimental setup for absolute distance measurement based on heterodyne and superheterodyne combined absolute distance interferometry. (b) Experimental results of distance measurement at 2 m.
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    Ziqi Yin, Fangfei Li, Yunke Sun, Yun Zou, Yan Wang, Hongxing Yang, Pengcheng Hu, Haijin Fu, Jiubin Tan. High synchronization absolute distance measurement using a heterodyne and superheterodyne combined interferometer[J]. Chinese Optics Letters, 2024, 22(1): 011204

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    Paper Information

    Category: Instrumentation, Measurement, and Optical Sensing

    Received: Jul. 4, 2023

    Accepted: Sep. 18, 2023

    Published Online: Jan. 9, 2024

    The Author Email: Hongxing Yang (takeon@126.com)

    DOI:10.3788/COL202422.011204

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