• Photonics Research
  • Vol. 9, Issue 2, 243 (2021)
Siyu Zhou1, Vunam Le1, Shilin Xiong1, Yuetang Yang1, Kai Ni2, Qian Zhou2, and Guanhao Wu1、*
Author Affiliations
  • 1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
  • 2Division of Advanced Manufacturing, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
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    DOI: 10.1364/PRJ.412898 Cite this Article Set citation alerts
    Siyu Zhou, Vunam Le, Shilin Xiong, Yuetang Yang, Kai Ni, Qian Zhou, Guanhao Wu. Dual-comb spectroscopy resolved three-degree-of-freedom sensing[J]. Photonics Research, 2021, 9(2): 243 Copy Citation Text show less

    Abstract

    Precise and fast determination of position and orientation, which is normally achieved by distance and angle measurements, has broad applications in academia and industry. We propose a dynamic three-degree-of-freedom measurement technique based on dual-comb interferometry and a self-designed grating-corner-cube (GCC) combined sensor. Benefiting from its unique combination of diffraction and reflection characteristics, the absolute distance, pitch, and yaw of the GCC sensor can be determined simultaneously by resolving the phase spectra of the corresponding diffracted beams. We experimentally demonstrate that the method exhibits a ranging precision (Allan deviation) of 13.7 nm and an angular precision of 0.088 arcsec, alongside a 1 ms reaction time. The proposed technique is capable of precise and fast measurement of distances and two-dimensional angles over long stand-off distances. A system with such an overall performance may be potentially applied to space missions, including in tight formation-flying satellites, for spacecraft rendezvous and docking, and for antenna measurement as well as the precise manufacture of components including lithography machines and aircraft-manufacturing devices.
    RZ(αz)=[cosαzsinαz0sinαzcosαz0001],

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    RX(αx)=[1000cosαxsinαx0sinαxcosαx],

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    RY(αy)=[cosαy0sinαy010sinαy0cosαy],

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    R=RYRXRZ.

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    nisinθcosγ=nicosαxsinαy+pλig,

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    nisinθsinγ=nisinαx+qλig,

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    Δφi(p,q)=2πλi·ΔLi(p,q)+p2πgΔxi(p,q)+q2πgΔyi(p,q).

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    Δφi(0,±1)=Δφi(0,1)Δφi(0,+1),

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    Δφi(±1,0)=Δφi(1,0)Δφi(+1,0).

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    Δφi(0,±1)=2πλi·niltanξi(0,+1)·ax2πλi·niltanξi(0,1)·ax,

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    αx=nig4πnil1(cnigfi)2·Δφi(0,±1),

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    αx=ncg4πncl1(cncgfc)2·Δφc(0,±1),

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    αx=14πnclg·[nc(cfcg)2]3/2·(ncdndf+c2g2fc3)·dΔφ(0,±1)df.

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    Siyu Zhou, Vunam Le, Shilin Xiong, Yuetang Yang, Kai Ni, Qian Zhou, Guanhao Wu. Dual-comb spectroscopy resolved three-degree-of-freedom sensing[J]. Photonics Research, 2021, 9(2): 243
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